diff --git a/src/start.cpp b/src/start.cpp
index 49ac86b6..78db9caf 100644
--- a/src/start.cpp
+++ b/src/start.cpp
@@ -21,6 +21,7 @@
 #include "Application.h"
 
 // X11
+#include <X11/Xlib.h>
 #include <X11/extensions/Xrender.h>
 
 // KDE