1 files changed, 1 insertions, 0 deletions

diff --git a/xdnd.c b/xdnd.c
index f506f47..86f378c 100644
--- a/xdnd.c
+++ b/xdnd.c
@@ -32,6 +32,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <stddef.h>
 #include <unistd.h>
 
 #include <X11/Intrinsic.h>