diff --git a/src/Gui/Application.cpp b/src/Gui/Application.cpp
index 52f83e0853..02da32008c 100644
--- a/src/Gui/Application.cpp
+++ b/src/Gui/Application.cpp
@@ -606,10 +606,12 @@ void Application::exportTo(const char* FileName, const char* DocName, const char
             }
 
             std::stringstream str;
+			std::set<App::DocumentObject*> unique_objs;
             str << "__objs__=[]" << std::endl;
             for (std::vector<App::DocumentObject*>::iterator it = sel.begin(); it != sel.end(); ++it) {
-                str << "__objs__.append(FreeCAD.getDocument(\"" << DocName << "\").getObject(\""
-                    << (*it)->getNameInDocument() << "\"))" << std::endl;
+				if (unique_objs.insert(*it).second)
+					str << "__objs__.append(FreeCAD.getDocument(\"" << DocName << "\").getObject(\""
+						<< (*it)->getNameInDocument() << "\"))" << std::endl;
             }
 
             str << "import " << Module << std::endl;