diff --git a/src/Mod/Sketcher/App/Sketch.h b/src/Mod/Sketcher/App/Sketch.h
index 5819ae18d4..eafc21d86b 100644
--- a/src/Mod/Sketcher/App/Sketch.h
+++ b/src/Mod/Sketcher/App/Sketch.h
@@ -33,6 +33,7 @@
 #include "planegcs/GCS.h"
 
 #include <Base/Persistence.h>
+#include <CXX/Objects.hxx>
 
 namespace Sketcher
 {