diff --git a/src/include/lwip/debug.h b/src/include/lwip/debug.h
index ae50e969..aadefc43 100644
--- a/src/include/lwip/debug.h
+++ b/src/include/lwip/debug.h
@@ -29,8 +29,6 @@
  * Author: Adam Dunkels <adam@sics.se>
  *
  */
-#error this is the original lwIP debug.h file. do not include
-
 #ifndef __LWIP_DEBUG_H__
 #define __LWIP_DEBUG_H__