diff --git a/src/test/test-conf-parser.c b/src/test/test-conf-parser.c
index 5da864347e..5ecc3b2d37 100644
--- a/src/test/test-conf-parser.c
+++ b/src/test/test-conf-parser.c
@@ -336,7 +336,7 @@ static void test_config_parse(unsigned i, const char *s) {
                          const void *table,
                          ConfigParseFlags flags,
                          void *userdata,
-                         usec_t *ret_mtime)
+                         struct stat *ret_stat);
         */
 
         r = config_parse(NULL, name, f,