diff --git a/src/Mod/Part/App/PropertyTopoShape.cpp b/src/Mod/Part/App/PropertyTopoShape.cpp
index a6ecad1e25..4e91f0089c 100644
--- a/src/Mod/Part/App/PropertyTopoShape.cpp
+++ b/src/Mod/Part/App/PropertyTopoShape.cpp
@@ -284,9 +284,9 @@ static Standard_Boolean  BRepTools_Write(const TopoDS_Shape& Sh, const Standard_
 {
   std::ofstream os;
 #if OCC_VERSION_HEX >= 0x060800
-  OSD_OpenStream(os, File, ios::out);
+  OSD_OpenStream(os, File, std::ios::out);
 #else
-  os.open(File, ios::out);
+  os.open(File, std::ios::out);
 #endif
   if (!os.rdbuf()->is_open()) return Standard_False;