diff --git a/src/utils/log.c b/src/utils/log.c
index 8f914aa6b..f0eb6aa3c 100644
--- a/src/utils/log.c
+++ b/src/utils/log.c
@@ -317,7 +317,7 @@ log_warning(void *priv, const char *fmt, ...)
     va_start(ap, fmt);
     vsprintf(temp, fmt2, ap);
     va_end(ap);
-    warning(temp, ap);
+    warning("%s", temp);
 }
 
 static void *