diff --git a/trykqueue.c b/trykqueue.c
index 1874b64..ea3b628 100644
--- a/trykqueue.c
+++ b/trykqueue.c
@@ -1,6 +1,7 @@
 #include <sys/types.h>
 #include <sys/event.h>
 #include <sys/time.h>
+#include <stdio.h>
 
 int main() {
   int kq=kqueue();