diff --git a/src/util/virtaudit.h b/src/util/virtaudit.h
index 37046f281fbaef780c7e7ee688a1917bd18d19a0..6c4deebc4ad8ec0298f1541ea0dc0e2907b262c7 100644
--- a/src/util/virtaudit.h
+++ b/src/util/virtaudit.h
@@ -39,7 +39,8 @@ void virAuditLog(int enabled);
 void virAuditSend(const char *file, const char *func, size_t linenr,
                   const char *clienttty, const char *clientaddr,
                   enum virAuditRecordType type, bool success,
-                  const char *fmt, ...);
+                  const char *fmt, ...)
+    ATTRIBUTE_FMT_PRINTF(8, 9);
 
 char *virAuditEncode(const char *key, const char *value);