diff --git a/src/Mod/PartDesign/App/FeatureSketchBased.cpp b/src/Mod/PartDesign/App/FeatureSketchBased.cpp
index 8eed4f07b..4f75e06d5 100644
--- a/src/Mod/PartDesign/App/FeatureSketchBased.cpp
+++ b/src/Mod/PartDesign/App/FeatureSketchBased.cpp
@@ -197,6 +197,8 @@ const TopoDS_Face SketchBased::getSupportFace() const {
 
 Part::Feature* SketchBased::getSupport() const {
     // get the support of the Sketch if any
+    if (!Sketch.getValue())
+        return 0;
     App::DocumentObject* SupportLink = static_cast<Part::Part2DObject*>(Sketch.getValue())->Support.getValue();
     Part::Feature* SupportObject = NULL;
     if (SupportLink && SupportLink->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId()))