diff --git a/wallet/db.c b/wallet/db.c
index 583640e5c..08671b78c 100644
--- a/wallet/db.c
+++ b/wallet/db.c
@@ -14,11 +14,6 @@
 #define DB_FILE "lightningd.sqlite3"
 #define NSEC_IN_SEC 1000000000
 
-/* For testing, we want to catch fatal messages. */
-#ifndef db_fatal
-#define db_fatal fatal
-#endif
-
 struct migration {
 	const char *sql;
 	void (*func)(struct lightningd *ld, struct db *db);
diff --git a/wallet/db_common.h b/wallet/db_common.h
index ae621b8ed..8156d6a1f 100644
--- a/wallet/db_common.h
+++ b/wallet/db_common.h
@@ -3,6 +3,11 @@
 #include "config.h"
 #include <ccan/autodata/autodata.h>
 #include <ccan/short_types/short_types.h>
+/* For testing, we want to catch fatal messages. */
+#ifndef db_fatal
+#define db_fatal fatal
+#endif
+
 
 struct db_query {
 	const char *name;