diff --git a/bitcoin/block.c b/bitcoin/block.c
index e142d340e..a70550625 100644
--- a/bitcoin/block.c
+++ b/bitcoin/block.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/block.h>
 #include <bitcoin/chainparams.h>
diff --git a/bitcoin/locktime.c b/bitcoin/locktime.c
index e0141ede4..d8ce95aa7 100644
--- a/bitcoin/locktime.c
+++ b/bitcoin/locktime.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/locktime.h>
 #include <ccan/tal/str/str.h>
diff --git a/bitcoin/psbt.c b/bitcoin/psbt.c
index 446a45ade..14ac04845 100644
--- a/bitcoin/psbt.c
+++ b/bitcoin/psbt.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/chainparams.h>
 #include <bitcoin/psbt.h>
diff --git a/bitcoin/test/run-secret_eq_consttime.c b/bitcoin/test/run-secret_eq_consttime.c
index 4ac8ffa53..a06cc4c03 100644
--- a/bitcoin/test/run-secret_eq_consttime.c
+++ b/bitcoin/test/run-secret_eq_consttime.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/privkey.c>
 #include <ccan/err/err.h>
diff --git a/bitcoin/test/run-tx-encode.c b/bitcoin/test/run-tx-encode.c
index 744333869..048472ba2 100644
--- a/bitcoin/test/run-tx-encode.c
+++ b/bitcoin/test/run-tx-encode.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/psbt.c>
 #include <bitcoin/shadouble.c>
diff --git a/bitcoin/tx.c b/bitcoin/tx.c
index 0d0c757cf..6be607b74 100644
--- a/bitcoin/tx.c
+++ b/bitcoin/tx.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/block.h>
 #include <bitcoin/chainparams.h>
diff --git a/bitcoin/tx_parts.c b/bitcoin/tx_parts.c
index 50027fb5c..e74c3f393 100644
--- a/bitcoin/tx_parts.c
+++ b/bitcoin/tx_parts.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/tx_parts.h>
 #include <common/utils.h>
diff --git a/channeld/full_channel.c b/channeld/full_channel.c
index ccc32f745..4001a1faa 100644
--- a/channeld/full_channel.c
+++ b/channeld/full_channel.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/chainparams.h>
 #include <bitcoin/preimage.h>
diff --git a/common/amount.c b/common/amount.c
index 74bf58198..aefec1ca1 100644
--- a/common/amount.c
+++ b/common/amount.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/chainparams.h>
 #include <ccan/endian/endian.h>
diff --git a/common/bigsize.c b/common/bigsize.c
index 2991a1fd7..5a54ab5ee 100644
--- a/common/bigsize.c
+++ b/common/bigsize.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <common/bigsize.h>
 #include <wire/wire.h>
diff --git a/common/coin_mvt.c b/common/coin_mvt.c
index 4c9cd214d..870df4366 100644
--- a/common/coin_mvt.c
+++ b/common/coin_mvt.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/ccan/cast/cast.h>
 #include <ccan/tal/str/str.h>
diff --git a/common/cryptomsg.c b/common/cryptomsg.c
index 41faf9b18..8a0a1168f 100644
--- a/common/cryptomsg.c
+++ b/common/cryptomsg.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/build_assert/build_assert.h>
 #include <ccan/crypto/hkdf_sha256/hkdf_sha256.h>
diff --git a/common/daemon.c b/common/daemon.c
index 09ef0b228..be881998d 100644
--- a/common/daemon.c
+++ b/common/daemon.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <backtrace-supported.h>
 #include <backtrace.h>
diff --git a/common/dev_disconnect.c b/common/dev_disconnect.c
index b3d7c07ef..d55c7f029 100644
--- a/common/dev_disconnect.c
+++ b/common/dev_disconnect.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/err/err.h>
 #include <ccan/str/str.h>
diff --git a/common/gossip_store.c b/common/gossip_store.c
index 4d49bf396..8937cddb5 100644
--- a/common/gossip_store.c
+++ b/common/gossip_store.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/crc32c/crc32c.h>
 #include <common/features.h>
diff --git a/common/gossmap.c b/common/gossmap.c
index 44ddb4a71..fa2473a41 100644
--- a/common/gossmap.c
+++ b/common/gossmap.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/bitops/bitops.h>
 #include <ccan/crypto/siphash24/siphash24.h>
diff --git a/common/initial_channel.c b/common/initial_channel.c
index 12c821f04..fef91fb3c 100644
--- a/common/initial_channel.c
+++ b/common/initial_channel.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/chainparams.h>
 #include <bitcoin/psbt.h>
diff --git a/common/json.c b/common/json.c
index cc7eddaad..82a07b32a 100644
--- a/common/json.c
+++ b/common/json.c
@@ -1,4 +1,5 @@
 /* JSON core and helpers */
+#include "config.h"
 #include <assert.h>
 #include <ccan/build_assert/build_assert.h>
 #include <ccan/json_escape/json_escape.h>
diff --git a/common/memleak.c b/common/memleak.c
index 3a8852bf9..639ac58de 100644
--- a/common/memleak.c
+++ b/common/memleak.c
@@ -19,6 +19,7 @@
  * 3. provides a routine to access any remaining pointers in the
  *    table: these are the leaks.
  */
+#include "config.h"
 #include <assert.h>
 #include <backtrace.h>
 #include <ccan/crypto/siphash24/siphash24.h>
diff --git a/common/msg_queue.c b/common/msg_queue.c
index 76bc76fac..120a77a9f 100644
--- a/common/msg_queue.c
+++ b/common/msg_queue.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <common/msg_queue.h>
 #include <common/utils.h>
diff --git a/common/node_id.c b/common/node_id.c
index b3c608f60..7302b6688 100644
--- a/common/node_id.c
+++ b/common/node_id.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/array_size/array_size.h>
 #include <ccan/mem/mem.h>
diff --git a/common/penalty_base.c b/common/penalty_base.c
index 795c9f304..ea93d16f0 100644
--- a/common/penalty_base.c
+++ b/common/penalty_base.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <common/penalty_base.h>
 #include <wire/wire.h>
diff --git a/common/per_peer_state.c b/common/per_peer_state.c
index b4cb680c4..18b2472ff 100644
--- a/common/per_peer_state.c
+++ b/common/per_peer_state.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/fdpass/fdpass.h>
 #include <common/gossip_constants.h>
diff --git a/common/private_channel_announcement.c b/common/private_channel_announcement.c
index 94b5c0a8d..124b151de 100644
--- a/common/private_channel_announcement.c
+++ b/common/private_channel_announcement.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/chainparams.h>
 #include <bitcoin/privkey.h>
diff --git a/common/read_peer_msg.c b/common/read_peer_msg.c
index 44794dd20..3f5f9d30f 100644
--- a/common/read_peer_msg.c
+++ b/common/read_peer_msg.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/fdpass/fdpass.h>
 #include <common/crypto_sync.h>
diff --git a/common/route.c b/common/route.c
index b6bf574cf..dfa538ab8 100644
--- a/common/route.c
+++ b/common/route.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/err/err.h>
 #include <ccan/tal/str/str.h>
diff --git a/common/setup.c b/common/setup.c
index 55281f458..2ea41f5a2 100644
--- a/common/setup.c
+++ b/common/setup.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/ccan/err/err.h>
 #include <common/memleak.h>
diff --git a/common/sphinx.c b/common/sphinx.c
index cb6bb5f56..3a6d0bf86 100644
--- a/common/sphinx.c
+++ b/common/sphinx.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 
 #include <ccan/array_size/array_size.h>
diff --git a/common/status.c b/common/status.c
index a2d40175b..c54944bb4 100644
--- a/common/status.c
+++ b/common/status.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/breakpoint/breakpoint.h>
 #include <ccan/endian/endian.h>
diff --git a/common/type_to_string.c b/common/type_to_string.c
index 25d5c3ef3..f90a871a6 100644
--- a/common/type_to_string.c
+++ b/common/type_to_string.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/preimage.h>
 #include <ccan/crypto/ripemd160/ripemd160.h>
diff --git a/common/utxo.c b/common/utxo.c
index dd6a09e35..b561d42b9 100644
--- a/common/utxo.c
+++ b/common/utxo.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/privkey.h>
 #include <bitcoin/psbt.h>
diff --git a/common/wireaddr.c b/common/wireaddr.c
index 75c74ff39..49a811c42 100644
--- a/common/wireaddr.c
+++ b/common/wireaddr.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <arpa/inet.h>
 #include <assert.h>
 #include <ccan/build_assert/build_assert.h>
diff --git a/connectd/handshake.c b/connectd/handshake.c
index b8ba995e0..38fca6c4b 100644
--- a/connectd/handshake.c
+++ b/connectd/handshake.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/privkey.h>
 #include <bitcoin/pubkey.h>
diff --git a/connectd/netaddress.c b/connectd/netaddress.c
index e171fd770..40cf36d18 100644
--- a/connectd/netaddress.c
+++ b/connectd/netaddress.c
@@ -1,4 +1,5 @@
 /* -*- c-basic-offset: 4; indent-tabs-mode: nil; -*- */
+#include "config.h"
 #include <arpa/inet.h>
 #include <assert.h>
 #include <common/status.h>
diff --git a/connectd/test/run-initiator-success.c b/connectd/test/run-initiator-success.c
index 20824c82f..627e0e241 100644
--- a/connectd/test/run-initiator-success.c
+++ b/connectd/test/run-initiator-success.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <stdio.h>
 #include <sys/socket.h>
diff --git a/connectd/test/run-responder-success.c b/connectd/test/run-responder-success.c
index 470ca33eb..a531f19ca 100644
--- a/connectd/test/run-responder-success.c
+++ b/connectd/test/run-responder-success.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <stdio.h>
 #include <sys/socket.h>
diff --git a/connectd/tor_autoservice.c b/connectd/tor_autoservice.c
index 4f6fe0df0..0b2e84343 100644
--- a/connectd/tor_autoservice.c
+++ b/connectd/tor_autoservice.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <arpa/inet.h>
 #include <assert.h>
 #include <ccan/err/err.h>
diff --git a/devtools/onion.c b/devtools/onion.c
index a385bee04..63b57410e 100644
--- a/devtools/onion.c
+++ b/devtools/onion.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/mem/mem.h>
 #include <ccan/opt/opt.h>
diff --git a/devtools/topology.c b/devtools/topology.c
index 2965fb73e..770451c28 100644
--- a/devtools/topology.c
+++ b/devtools/topology.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/err/err.h>
 #include <ccan/opt/opt.h>
diff --git a/gossipd/test/run-bench-find_route.c b/gossipd/test/run-bench-find_route.c
index 1d1f213fb..6381fc50f 100644
--- a/gossipd/test/run-bench-find_route.c
+++ b/gossipd/test/run-bench-find_route.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/pubkey.h>
 #include <ccan/err/err.h>
diff --git a/plugins/spender/multifundchannel.c b/plugins/spender/multifundchannel.c
index 35d5d6052..081a5f87b 100644
--- a/plugins/spender/multifundchannel.c
+++ b/plugins/spender/multifundchannel.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/chainparams.h>
 #include <bitcoin/psbt.h>
diff --git a/plugins/spender/openchannel.c b/plugins/spender/openchannel.c
index 5e4bd2cba..a5c972df4 100644
--- a/plugins/spender/openchannel.c
+++ b/plugins/spender/openchannel.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/psbt.h>
 #include <ccan/ccan/array_size/array_size.h>
diff --git a/tests/fuzz/fuzz-amount.c b/tests/fuzz/fuzz-amount.c
index ed2e2ad06..3e5701926 100644
--- a/tests/fuzz/fuzz-amount.c
+++ b/tests/fuzz/fuzz-amount.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <stdint.h>
 #include <tests/fuzz/libfuzz.h>
diff --git a/tests/fuzz/fuzz-base32-64.c b/tests/fuzz/fuzz-base32-64.c
index fe19a781d..edc68445f 100644
--- a/tests/fuzz/fuzz-base32-64.c
+++ b/tests/fuzz/fuzz-base32-64.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <stdint.h>
 #include <string.h>
diff --git a/tests/fuzz/fuzz-bigsize.c b/tests/fuzz/fuzz-bigsize.c
index 3b32678c8..52af33877 100644
--- a/tests/fuzz/fuzz-bigsize.c
+++ b/tests/fuzz/fuzz-bigsize.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <stdint.h>
 #include <string.h>
diff --git a/tests/fuzz/fuzz-bip32.c b/tests/fuzz/fuzz-bip32.c
index 2abdc3497..a21e9ad21 100644
--- a/tests/fuzz/fuzz-bip32.c
+++ b/tests/fuzz/fuzz-bip32.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <stdint.h>
 #include <string.h>
diff --git a/tests/fuzz/fuzz-channel_id.c b/tests/fuzz/fuzz-channel_id.c
index ce9a8e341..4b0931edf 100644
--- a/tests/fuzz/fuzz-channel_id.c
+++ b/tests/fuzz/fuzz-channel_id.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <bitcoin/pubkey.h>
 #include <bitcoin/tx.h>
diff --git a/tests/fuzz/fuzz-close_tx.c b/tests/fuzz/fuzz-close_tx.c
index 74c62ccf7..11236107f 100644
--- a/tests/fuzz/fuzz-close_tx.c
+++ b/tests/fuzz/fuzz-close_tx.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <stdint.h>
 #include <string.h>
diff --git a/tests/fuzz/fuzz-hsm_encryption.c b/tests/fuzz/fuzz-hsm_encryption.c
index b3b779b8f..9505d4b5d 100644
--- a/tests/fuzz/fuzz-hsm_encryption.c
+++ b/tests/fuzz/fuzz-hsm_encryption.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <tests/fuzz/libfuzz.h>
 
diff --git a/tests/fuzz/fuzz-initial_channel.c b/tests/fuzz/fuzz-initial_channel.c
index 8217b4007..c2e690e58 100644
--- a/tests/fuzz/fuzz-initial_channel.c
+++ b/tests/fuzz/fuzz-initial_channel.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <fcntl.h>
 #include <stdint.h>
diff --git a/tools/check-includes.sh b/tools/check-includes.sh
index 18c9f2e17..fe2003095 100755
--- a/tools/check-includes.sh
+++ b/tools/check-includes.sh
@@ -40,7 +40,7 @@ for HEADER_FILE in $(filter_suffix h); do
     if [[ ! -e $C_FILE ]]; then
         continue
     fi
-    DUPLICATE_INCLUDES_IN_HEADER_AND_C_FILES=$(grep -hE "^#include " <(sort -u < "${HEADER_FILE}") <(sort -u < "${C_FILE}") | grep -E "^#include " | sort | uniq -d)
+    DUPLICATE_INCLUDES_IN_HEADER_AND_C_FILES=$(grep -hE "^#include " <(sort -u < "${HEADER_FILE}") <(sort -u < "${C_FILE}" | grep -v '"config.h"') | grep -E "^#include " | sort | uniq -d)
     if [[ ${DUPLICATE_INCLUDES_IN_HEADER_AND_C_FILES} != "" ]]; then
         echo "Include(s) from ${HEADER_FILE} duplicated in ${C_FILE}:"
         echo "${DUPLICATE_INCLUDES_IN_HEADER_AND_C_FILES}"
diff --git a/wire/tlvstream.c b/wire/tlvstream.c
index f46b3ef3e..eb27a16cc 100644
--- a/wire/tlvstream.c
+++ b/wire/tlvstream.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <common/bigsize.h>
 #include <wire/tlvstream.h>
diff --git a/wire/wire_sync.c b/wire/wire_sync.c
index 2fdcf3136..bdb3e4ef5 100644
--- a/wire/wire_sync.c
+++ b/wire/wire_sync.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <assert.h>
 #include <ccan/endian/endian.h>
 #include <ccan/read_write_all/read_write_all.h>