diff --git a/wxPython/src/_config.i b/wxPython/src/_config.i
index 434b42cdb1..1c8b100ff3 100644
--- a/wxPython/src/_config.i
+++ b/wxPython/src/_config.i
@@ -24,12 +24,14 @@
 
 %{
     static PyObject* __EnumerationHelper(bool flag, wxString& str, long index) {
+        wxPyBlock_t blocked = wxPyBeginBlockThreads();
         PyObject* ret = PyTuple_New(3);
         if (ret) {
             PyTuple_SET_ITEM(ret, 0, PyInt_FromLong(flag));
 	    PyTuple_SET_ITEM(ret, 1, wx2PyString(str));
             PyTuple_SET_ITEM(ret, 2, PyInt_FromLong(index));
         }
+        wxPyEndBlockThreads(blocked);
         return ret;
     }
 %}
diff --git a/wxPython/src/_font.i b/wxPython/src/_font.i
index 0e1922ad52..0e3fc5ba79 100644
--- a/wxPython/src/_font.i
+++ b/wxPython/src/_font.i
@@ -842,19 +842,27 @@ public:
     //wxArrayString* GetFacenames();
     %extend {
         PyObject* GetEncodings() {
+            PyObject* ret;
             wxArrayString* arr = self->GetEncodings();
+            wxPyBlock_t blocked = wxPyBeginBlockThreads();            
             if (arr)
-                return wxArrayString2PyList_helper(*arr);
+                ret = wxArrayString2PyList_helper(*arr);
             else
-                return PyList_New(0);
+                ret = PyList_New(0);
+            wxPyEndBlockThreads(blocked);
+            return ret;
         }
 
         PyObject* GetFacenames() {
+            PyObject* ret;
             wxArrayString* arr = self->GetFacenames();
+            wxPyBlock_t blocked = wxPyBeginBlockThreads();            
             if (arr)
-                return wxArrayString2PyList_helper(*arr);
+                ret = wxArrayString2PyList_helper(*arr);
             else
-                return PyList_New(0);
+                ret =  PyList_New(0);
+            wxPyEndBlockThreads(blocked);
+            return ret;
         }
     }
 };