diff --git a/src/Gui/DocumentObserverPython.h b/src/Gui/DocumentObserverPython.h
index bd3aa5b51d..be1427630b 100644
--- a/src/Gui/DocumentObserverPython.h
+++ b/src/Gui/DocumentObserverPython.h
@@ -77,7 +77,7 @@ private:
     Py::Object inst;
     static std::vector<DocumentObserverPython*> _instances;
 
-    typedef struct {
+    typedef struct PythonObject {
        boost::signals2::scoped_connection slot;
        Py::Object py;
        PyObject* ptr() {