diff --git a/extend.h b/extend.h
index b3d923f..8a6ab8f 100644
--- a/extend.h
+++ b/extend.h
@@ -3,7 +3,6 @@
 
 #include <stddef.h>
 
-#include "mpool.h"
 #include "conev.h"
 #include "proxy.h"