diff --git a/src/corelib/tools/qline.h b/src/corelib/tools/qline.h
index b11c23e05a..c3fb2fd5f5 100644
--- a/src/corelib/tools/qline.h
+++ b/src/corelib/tools/qline.h
@@ -40,7 +40,7 @@
 #ifndef QLINE_H
 #define QLINE_H
 
-#include "qmath.h"
+#include <QtCore/qmath.h>
 
 #include <QtCore/qpoint.h>