diff --git a/src/Mod/Sketcher/App/SketchObject.cpp b/src/Mod/Sketcher/App/SketchObject.cpp
index b1a7433052..4b5d53e1cd 100644
--- a/src/Mod/Sketcher/App/SketchObject.cpp
+++ b/src/Mod/Sketcher/App/SketchObject.cpp
@@ -8632,9 +8632,6 @@ void SketchObject::rebuildExternalGeometry(std::optional<ExternalToAdd> extToAdd
     auto SubElements = ExternalGeometry.getSubValues();
     assert(externalGeoRef.size() == Objects.size());
     auto keys = externalGeoRef;
-    if (Types.size() != Objects.size()) {
-        Types.resize(Objects.size(), 0);
-    }
 
     // re-check for any missing geometry element. The code here has a side
     // effect that the linked external geometry will continue to work even if
@@ -8695,6 +8692,10 @@ void SketchObject::rebuildExternalGeometry(std::optional<ExternalToAdd> extToAdd
     BRepBuilderAPI_MakeFace mkFace(sketchPlane);
     TopoDS_Shape aProjFace = mkFace.Shape();
 
+    if (Types.size() != Objects.size()) {
+        Types.resize(Objects.size(), 0);
+    }
+
     std::set<std::string> refSet;
     // We use a vector here to keep the order (roughly) the same as ExternalGeometry
     std::vector<std::vector<std::unique_ptr<Part::Geometry> > > newGeos;