diff --git a/src/conn.c b/src/conn.c
index 2f62167..ad0091e 100755
--- a/src/conn.c
+++ b/src/conn.c
@@ -34,6 +34,7 @@
 #include "config.h"
 
 #include <assert.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>