$ git diff
diff --git a/addons/project/kateproject.h b/addons/project/kateproject.h
index 2713d8a0a..8f9a27db6 100644
--- a/addons/project/kateproject.h
+++ b/addons/project/kateproject.h
@@ -7,6 +7,8 @@
 
 #pragma once
 
+#include <QtGlobal>
+
 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 #include <KTextEditor/ModificationInterface>
 #endif