diff --git a/src/Mod/Part/App/TopoShape.cpp b/src/Mod/Part/App/TopoShape.cpp
index 0537100849..914b35845d 100644
--- a/src/Mod/Part/App/TopoShape.cpp
+++ b/src/Mod/Part/App/TopoShape.cpp
@@ -3130,7 +3130,9 @@ TopoDS_Shape TopoShape::makeOffset2D(double offset, short joinType, bool fill, b
         BRep_Builder builder;
         builder.MakeCompound(result);
         for(TopoDS_Shape &sh : shapesToReturn) {
-            builder.Add(result, sh);
+            if (!sh.IsNull()) {
+                builder.Add(result, sh);
+            }
         }
         return TopoDS_Shape(std::move(result));
     }