diff --git a/client/gui_rpc_server.C b/client/gui_rpc_server.C
index 9ba95c0eaa..9d74fbab5f 100644
--- a/client/gui_rpc_server.C
+++ b/client/gui_rpc_server.C
@@ -28,6 +28,7 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <sys/socket.h>
+#include <sys/stat.h>
 #include <sys/un.h>
 #include <vector>
 #include <string.h>