diff --git a/common/json.c b/common/json.c
index 7d8248edc..f116dd86e 100644
--- a/common/json.c
+++ b/common/json.c
@@ -719,42 +719,6 @@ void json_tok_remove(jsmntok_t **tokens,
 	tal_resize(tokens, tal_count(*tokens) - remove_count);
 }
 
-const jsmntok_t *json_delve(const char *buffer,
-			    const jsmntok_t *tok,
-			    const char *guide)
-{
-       while (*guide) {
-	       const char *key;
-	       size_t len = strcspn(guide+1, ".[]");
-
-	       key = tal_strndup(tmpctx, guide+1, len);
-	       switch (guide[0]) {
-	       case '.':
-		       if (tok->type != JSMN_OBJECT)
-			       return NULL;
-		       tok = json_get_member(buffer, tok, key);
-		       if (!tok)
-			       return NULL;
-		       break;
-	       case '[':
-		       if (tok->type != JSMN_ARRAY)
-			       return NULL;
-		       tok = json_get_arr(tok, atol(key));
-		       if (!tok)
-			       return NULL;
-		       /* Must be terminated */
-		       assert(guide[1+strlen(key)] == ']');
-		       len++;
-		       break;
-	       default:
-		       abort();
-	       }
-	       guide += len + 1;
-       }
-
-       return tok;
-}
-
 /* talfmt take a ctx pointer and return NULL or a valid pointer.
  * fmt takes the argument, and returns a bool. */
 static bool handle_percent(const char *buffer,
diff --git a/common/json.h b/common/json.h
index b152e8a9e..e8d601563 100644
--- a/common/json.h
+++ b/common/json.h
@@ -152,11 +152,6 @@ jsmntok_t *json_tok_copy(const tal_t *ctx, const jsmntok_t *tok);
 void json_tok_remove(jsmntok_t **tokens,
 		     jsmntok_t *obj_or_array, const jsmntok_t *tok, size_t num);
 
-/* Guide is a string with . for members, [] around indexes. */
-const jsmntok_t *json_delve(const char *buffer,
-			    const jsmntok_t *tok,
-			    const char *guide);
-
 /* Guide is % for a token: each must be followed by JSON_SCAN(). */
 bool json_scan(const char *buffer,
 	       const jsmntok_t *tok,
diff --git a/common/test/run-json.c b/common/test/run-json.c
index ce6dd5c48..599808f08 100644
--- a/common/test/run-json.c
+++ b/common/test/run-json.c
@@ -178,101 +178,6 @@ static void test_json_tok_size(void)
 	assert(!toks);
 }
 
-static void test_json_delve(void)
-{
-	const jsmntok_t *toks, *t;
-	char *buf;
-
-	buf = "{\"1\":\"one\", \"2\":\"two\", \"3\":[\"three\", {\"deeper\": 17}]}";
-	toks = json_parse_simple(tmpctx, buf, strlen(buf));
-	assert(toks);
-	assert(toks->size == 3);
-
-	t = json_delve(buf, toks, ".1");
-	assert(t);
-	assert(t->type == JSMN_STRING);
-	assert(json_tok_streq(buf, t, "one"));
-	assert(t == toks+2);
-
-	t = json_delve(buf, toks, ".2");
-	assert(t);
-	assert(t->type == JSMN_STRING);
-	assert(json_tok_streq(buf, t, "two"));
-	assert(t == toks+4);
-
-	t = json_delve(buf, toks, ".3");
-	assert(t);
-	assert(t->type == JSMN_ARRAY);
-	assert(t == toks+6);
-	assert(t->size == 2);
-
-	t = json_delve(buf, toks, ".3[0]");
-	assert(t);
-	assert(t->type == JSMN_STRING);
-	assert(json_tok_streq(buf, t, "three"));
-	assert(t == toks+7);
-
-	t = json_delve(buf, toks, ".3[1]");
-	assert(t);
-	assert(t->type == JSMN_OBJECT);
-	assert(t == toks+8);
-	assert(t->size == 1);
-
-	t = json_delve(buf, toks, ".3[1].deeper");
-	assert(t);
-	assert(t->type == JSMN_PRIMITIVE);
-	assert(memeq(buf + t->start, t->end - t->start, "17", strlen("17")));
-	assert(t == toks+10);
-
-	t = json_delve(buf, toks, ".4");
-	assert(!t);
-	t = json_delve(buf, toks, "[0]");
-	assert(!t);
-	t = json_delve(buf, toks, ".deeper");
-	assert(!t);
-	t = json_delve(buf, toks, ".3[2]");
-	assert(!t);
-	t = json_delve(buf, toks, ".3[2].deeper");
-	assert(!t);
-	t = json_delve(buf, toks, ".3[0].deeper");
-	assert(!t);
-	t = json_delve(buf, toks, ".3[1].deeper[0]");
-	assert(!t);
-	t = json_delve(buf, toks, ".3[1][0]");
-	assert(!t);
-
-	/* Now a real example. */
-	buf = "{\n"
-		"  \"jsonrpc\": \"2.0\", \n"
-		"  \"method\": \"init\", \n"
-		"  \"id\": 1, \n"
-		"  \"params\": {\n"
-		"    \"options\": {\n"
-		"    }, \n"
-		"    \"configuration\": {\n"
-		"      \"lightning-dir\": \"/tmp/ltests-n2hyd543/test_pay_plugin_1/lightning-2/\", \n"
-		"      \"rpc-file\": \"lightning-rpc\"\n"
-		"    }\n"
-		"  }\n"
-		"}\n"
-		"\n";
-	toks = json_parse_simple(tmpctx, buf, strlen(buf));
-	assert(toks);
-	assert(toks->size == 4);
-
-	t = json_delve(buf, toks, ".rpcfile");
-	assert(!t);
-	t = json_delve(buf, toks, ".configuration.rpc-file");
-	assert(!t);
-	t = json_delve(buf, toks, ".params.configuration");
-	assert(t);
-	assert(t->size == 2);
-	t = json_delve(buf, toks, ".params.configuration.rpc-file");
-	assert(t);
-	assert(t->type == JSMN_STRING);
-	assert(json_tok_streq(buf, t, "lightning-rpc"));
-}
-
 static void test_json_bad_utf8(void)
 {
 	const jsmntok_t *toks;
@@ -308,7 +213,6 @@ int main(int argc, char *argv[])
 	test_json_tok_size();
 	test_json_tok_bitcoin_amount();
 	test_json_tok_millionths();
-	test_json_delve();
 	test_json_bad_utf8();
 
 	common_shutdown();