diff --git a/src/qtgui/rtitool.cpp b/src/qtgui/rtitool.cpp
index d1f91f91..3c96051b 100644
--- a/src/qtgui/rtitool.cpp
+++ b/src/qtgui/rtitool.cpp
@@ -20,7 +20,7 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <signal.h>
-
+#include <sys/stat.h>
 #include <string>
 using std::string;