diff --git a/src/Mod/Part/App/AppPartPy.cpp b/src/Mod/Part/App/AppPartPy.cpp
index 3fab8fd9b..6367229b2 100644
--- a/src/Mod/Part/App/AppPartPy.cpp
+++ b/src/Mod/Part/App/AppPartPy.cpp
@@ -147,7 +147,7 @@ struct EdgePoints {
     TopoDS_Edge edge;
 };
 
-std::list<TopoDS_Edge> sort_Edges(double tol3d, std::list<TopoDS_Edge>& edges)
+PartExport std::list<TopoDS_Edge> sort_Edges(double tol3d, std::list<TopoDS_Edge>& edges)
 {
     tol3d = tol3d * tol3d;
     std::list<EdgePoints>  edge_points;