diff --git a/src/App/DocumentObjectGroup.cpp b/src/App/DocumentObjectGroup.cpp
index ceb0fca72..53b3eb1dd 100644
--- a/src/App/DocumentObjectGroup.cpp
+++ b/src/App/DocumentObjectGroup.cpp
@@ -37,7 +37,7 @@ PROPERTY_SOURCE(App::DocumentObjectGroup, App::DocumentObject)
 
 DocumentObjectGroup::DocumentObjectGroup() 
 {
-    ADD_PROPERTY_TYPE(Group,(0),"Base",(App::PropertyType)(Prop_ReadOnly|Prop_Output),"List of referenced objects");
+    ADD_PROPERTY_TYPE(Group,(0),"Base",(App::PropertyType)(Prop_Output),"List of referenced objects");
 }
 
 DocumentObjectGroup::~DocumentObjectGroup()