diff --git a/iguana/exchanges/CMakeLists.txt b/iguana/exchanges/CMakeLists.txt
index edd42c9c8..618b95da6 100644
--- a/iguana/exchanges/CMakeLists.txt
+++ b/iguana/exchanges/CMakeLists.txt
@@ -1,7 +1,9 @@
 include_directories(${CMAKE_CURRENT_SOURCE_DIR})
-add_executable(marketmaker-testnet mm.c ../mini-gmp.c ../groestl.c ../segwit_addr.c)
-add_executable(marketmaker-mainnet mm.c ../mini-gmp.c ../groestl.c ../segwit_addr.c)
+set(MM_SOURCES mm.c ../mini-gmp.c ../groestl.c ../segwit_addr.c ../keccak.c)
+set(MM_LIBS nanomsg curl pthread m libcrypto777 libjpeg libsecp256k1 "-Wl,--allow-multiple-definition")
+add_executable(marketmaker-testnet ${MM_SOURCES})
+add_executable(marketmaker-mainnet ${MM_SOURCES})
 include_directories(../../crypto777)
 target_compile_definitions(marketmaker-testnet PRIVATE ETOMIC_TESTNET)
-target_link_libraries(marketmaker-testnet PRIVATE nanomsg curl pthread m libcrypto777 libjpeg libsecp256k1 "-Wl,--allow-multiple-definition" etomiclib-testnet)
-target_link_libraries(marketmaker-mainnet PRIVATE nanomsg curl pthread m libcrypto777 libjpeg libsecp256k1 "-Wl,--allow-multiple-definition" etomiclib-mainnet)
\ No newline at end of file
+target_link_libraries(marketmaker-testnet PRIVATE ${MM_LIBS} etomiclib-testnet)
+target_link_libraries(marketmaker-mainnet PRIVATE ${MM_LIBS} etomiclib-mainnet)
\ No newline at end of file