1 files changed, 1 insertions, 0 deletions
diff --git a/x11.c b/x11.c
index ee83781..6d1f9cb 100644
--- a/x11.c
+++ b/x11.c
@@ -22,6 +22,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <stddef.h>
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/socket.h>