diff --git a/src/Mod/Part/App/ConePyImp.cpp b/src/Mod/Part/App/ConePyImp.cpp
index 95fbaa773b..b2f35de625 100644
--- a/src/Mod/Part/App/ConePyImp.cpp
+++ b/src/Mod/Part/App/ConePyImp.cpp
@@ -24,6 +24,7 @@
 #ifndef _PreComp_
 # include <GC_MakeConicalSurface.hxx>
 # include <Geom_ConicalSurface.hxx>
+# include <gp_Cone.hxx>
 # include <Standard_Failure.hxx>
 #endif