diff --git a/waitforx/waitforx.c b/waitforx/waitforx.c
index e1512dce..6a0e7381 100644
--- a/waitforx/waitforx.c
+++ b/waitforx/waitforx.c
@@ -3,7 +3,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
-#include <sys/signal.h>
 #include <unistd.h>
 #include <limits.h>