diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index c72bb4d2eb7e..e87b630bd793 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -11,7 +11,7 @@
  * Copyright (C) 2013 Du, Changbin <changbin.du@gmail.com>
  */
 
-#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
+#define pr_fmt(fmt) "dyndbg: " fmt
 
 #include <linux/kernel.h>
 #include <linux/module.h>