diff --git a/src/Mod/Part/App/Geometry.cpp b/src/Mod/Part/App/Geometry.cpp
index 096332bf84..2329efbd8a 100644
--- a/src/Mod/Part/App/Geometry.cpp
+++ b/src/Mod/Part/App/Geometry.cpp
@@ -3564,7 +3564,7 @@ PyObject *GeomLine::getPyObject(void)
 
 // -------------------------------------------------
 
-TYPESYSTEM_SOURCE(Part::GeomLineSegment,Part::GeomCurve)
+TYPESYSTEM_SOURCE(Part::GeomLineSegment,Part::GeomTrimmedCurve)
 
 GeomLineSegment::GeomLineSegment()
 {