diff --git a/progs/xdemos/corender.c b/progs/xdemos/corender.c
index 640c902c136..e706f4b3da5 100644
--- a/progs/xdemos/corender.c
+++ b/progs/xdemos/corender.c
@@ -20,7 +20,6 @@
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
 #include <X11/keysym.h>
 #include <unistd.h>
 #include "ipc.h"