diff --git a/src/Mod/Part/App/AppPartPy.cpp b/src/Mod/Part/App/AppPartPy.cpp
index 20d680b364..3c5e718f92 100644
--- a/src/Mod/Part/App/AppPartPy.cpp
+++ b/src/Mod/Part/App/AppPartPy.cpp
@@ -152,12 +152,17 @@ PartExport std::vector<TopoShape> getPyShapes(PyObject *obj) {
     return ret;
 }
 
+namespace
+{
+
 struct EdgePoints {
     gp_Pnt v1, v2;
     std::list<TopoDS_Edge>::iterator it;
     TopoDS_Edge edge;
 };
 
+}
+
 PartExport std::list<TopoDS_Edge> sort_Edges(double tol3d, std::list<TopoDS_Edge>& edges)
 {
     tol3d = tol3d * tol3d;
diff --git a/src/Mod/Part/App/TopoShapeExpansion.cpp b/src/Mod/Part/App/TopoShapeExpansion.cpp
index 13e6a1ce25..87bfd083a4 100644
--- a/src/Mod/Part/App/TopoShapeExpansion.cpp
+++ b/src/Mod/Part/App/TopoShapeExpansion.cpp
@@ -3119,6 +3119,9 @@ TopoShape& TopoShape::makeElementWires(const std::vector<TopoShape>& shapes,
     return makeElementCompound(wires, nullptr, SingleShapeCompoundCreationPolicy::returnShape);
 }
 
+namespace
+{
+
 
 struct EdgePoints
 {
@@ -3145,6 +3148,8 @@ struct EdgePoints
     }
 };
 
+}
+
 TopoShape TopoShape::reverseEdge(const TopoShape& edge)
 {
     Standard_Real first = NAN;