diff --git a/src/util/util.h b/src/util/util.h
index cfd55f05da9..c042e7e1c7f 100644
--- a/src/util/util.h
+++ b/src/util/util.h
@@ -189,8 +189,8 @@ void sss_log(int priority, const char *format, ...) SSS_ATTRIBUTE_PRINTF(2, 3);
 void sss_log_ext(int priority, int facility, const char *format, ...) SSS_ATTRIBUTE_PRINTF(3, 4);
 
 /* from server.c */
-#define DEBUG_CHAIN_ID_FMT_RID "[RID#%lu] %s"
-#define DEBUG_CHAIN_ID_FMT_CID "[CID#%lu] %s"
+#define DEBUG_CHAIN_ID_FMT_RID "[RID#"PRIu64"] %s"
+#define DEBUG_CHAIN_ID_FMT_CID "[CID#"PRIu64"] %s"
 
 struct main_context {
     struct tevent_context *event_ctx;