diff --git a/Mac/Modules/dlg/_Dlgmodule.c b/Mac/Modules/dlg/_Dlgmodule.c
index 64ddac8..46009a8 100644
--- a/Mac/Modules/dlg/_Dlgmodule.c
+++ b/Mac/Modules/dlg/_Dlgmodule.c
@@ -139,7 +139,7 @@
 PyObject *DlgObj_New(DialogPtr itself)
 {
 	DialogObject *it;
-	if (itself == NULL) return Py_None;
+	if (itself == NULL) { Py_INCREF(Py_None); return Py_None; }
 	it = PyObject_NEW(DialogObject, &Dialog_Type);
 	if (it == NULL) return NULL;
 	it->ob_itself = itself;
diff --git a/Mac/Modules/dlg/dlgsupport.py b/Mac/Modules/dlg/dlgsupport.py
index 1c0cc6a..fa1442e 100644
--- a/Mac/Modules/dlg/dlgsupport.py
+++ b/Mac/Modules/dlg/dlgsupport.py
@@ -202,7 +202,7 @@
         Output("SetWRefCon(GetDialogWindow(itself), (long)it);")
 
     def outputCheckNewArg(self):
-        Output("if (itself == NULL) return Py_None;")
+        Output("if (itself == NULL) { Py_INCREF(Py_None); return Py_None; }")
 
     def outputCheckConvertArg(self):
         Output("if (v == Py_None) { *p_itself = NULL; return 1; }")
diff --git a/Mac/Modules/file/_Filemodule.c b/Mac/Modules/file/_Filemodule.c
index c211de1..07bd341 100644
--- a/Mac/Modules/file/_Filemodule.c
+++ b/Mac/Modules/file/_Filemodule.c
@@ -153,7 +153,7 @@
 static PyObject *FSCatalogInfo_New(FSCatalogInfo *itself)
 {
 	FSCatalogInfoObject *it;
-	if (itself == NULL) return Py_None;
+	if (itself == NULL) { Py_INCREF(Py_None); return Py_None; }
 	it = PyObject_NEW(FSCatalogInfoObject, &FSCatalogInfo_Type);
 	if (it == NULL) return NULL;
 	it->ob_itself = *itself;
diff --git a/Mac/Modules/file/filesupport.py b/Mac/Modules/file/filesupport.py
index f2d4193..37aeb50 100644
--- a/Mac/Modules/file/filesupport.py
+++ b/Mac/Modules/file/filesupport.py
@@ -475,7 +475,7 @@
         self.argref = "*"       # Store FSSpecs, but pass them by address
 
     def outputCheckNewArg(self):
-        Output("if (itself == NULL) return Py_None;")
+        Output("if (itself == NULL) { Py_INCREF(Py_None); return Py_None; }")
 
     def output_tp_newBody(self):
         Output("PyObject *self;");
diff --git a/Mac/Modules/gestaltmodule.c b/Mac/Modules/gestaltmodule.c
index 6d8673f..ddfa94a 100644
--- a/Mac/Modules/gestaltmodule.c
+++ b/Mac/Modules/gestaltmodule.c
@@ -35,7 +35,7 @@
 	OSErr iErr;
 	OSType selector;
 	long response;
-	if (!PyArg_Parse(args, "O&", PyMac_GetOSType, &selector))
+	if (!PyArg_ParseTuple(args, "O&", PyMac_GetOSType, &selector))
 		return NULL;
 	iErr = Gestalt ( selector, &response );
 	if (iErr != 0) 
@@ -44,7 +44,7 @@
 }
 
 static struct PyMethodDef gestalt_methods[] = {
-	{"gestalt", gestalt_gestalt},
+	{"gestalt", gestalt_gestalt, METH_VARARGS},
 	{NULL, NULL} /* Sentinel */
 };