diff --git a/wallet/test/run-db.c b/wallet/test/run-db.c
index 99f619a27..ce027aa9a 100644
--- a/wallet/test/run-db.c
+++ b/wallet/test/run-db.c
@@ -32,7 +32,7 @@ static void db_fatal(const char *fmt, ...)
 	va_end(ap);
 }
 
-static struct db *create_test_db(const char *testname)
+static struct db *create_test_db(void)
 {
 	struct db *db;
 	char filename[] = "/tmp/ldb-XXXXXX";
@@ -48,7 +48,7 @@ static struct db *create_test_db(const char *testname)
 
 static bool test_empty_db_migrate(void)
 {
-	struct db *db = create_test_db(__func__);
+	struct db *db = create_test_db();
 	CHECK(db);
 	db_begin_transaction(db);
 	CHECK(db_get_version(db) == -1);
@@ -64,7 +64,7 @@ static bool test_empty_db_migrate(void)
 
 static bool test_primitives(void)
 {
-	struct db *db = create_test_db(__func__);
+	struct db *db = create_test_db();
 	db_begin_transaction(db);
 	CHECK(db->in_transaction);
 	db_commit_transaction(db);
@@ -88,7 +88,7 @@ static bool test_primitives(void)
 
 static bool test_vars(void)
 {
-	struct db *db = create_test_db(__func__);
+	struct db *db = create_test_db();
 	char *varname = "testvar";
 	CHECK(db);
 	db_migrate(db, NULL);