diff --git a/client.c b/client.c
index 8c5fd19a6e..2ea88f7bfe 100644
--- a/client.c
+++ b/client.c
@@ -20,6 +20,7 @@
 #include <sys/socket.h>
 #include <sys/un.h>
 #include <sys/wait.h>
+#include <sys/file.h>
 
 #include <errno.h>
 #include <event.h>