diff --git a/Mac/Modules/MacOS.c b/Mac/Modules/MacOS.c
index 99e531b..9148fe0 100644
--- a/Mac/Modules/MacOS.c
+++ b/Mac/Modules/MacOS.c
@@ -30,6 +30,9 @@
 #include <Carbon/Carbon.h>
 #include <ApplicationServices/ApplicationServices.h>
 
+#ifndef HAVE_MACOS105_SDK
+typedef SInt16	FSIORefNum;
+#endif
 
 static PyObject *MacOS_Error; /* Exception MacOS.Error */
 
diff --git a/Mac/Modules/ae/_AEmodule.c b/Mac/Modules/ae/_AEmodule.c
index dd154c7..e12a30c 100644
--- a/Mac/Modules/ae/_AEmodule.c
+++ b/Mac/Modules/ae/_AEmodule.c
@@ -7,6 +7,10 @@
 
 #include "pymactoolbox.h"
 
+#ifndef HAVE_OSX105_SDK
+typedef SInt32 SRefCon;
+#endif
+
 /* Macro to test whether a weak-loaded CFM function exists */
 #define PyMac_PRECHECK(rtn) do { if ( &rtn == NULL )  {\
         PyErr_SetString(PyExc_NotImplementedError, \
diff --git a/Mac/Modules/file/_Filemodule.c b/Mac/Modules/file/_Filemodule.c
index 8ff007f..352ef64 100644
--- a/Mac/Modules/file/_Filemodule.c
+++ b/Mac/Modules/file/_Filemodule.c
@@ -7,6 +7,10 @@
 
 #include "pymactoolbox.h"
 
+#ifndef HAVE_MACOS105_SDK
+typedef SInt16	FSIORefNum;
+#endif
+
 /* Macro to test whether a weak-loaded CFM function exists */
 #define PyMac_PRECHECK(rtn) do { if ( &rtn == NULL )  {\
         PyErr_SetString(PyExc_NotImplementedError, \
@@ -193,10 +197,6 @@
 static void FSCatalogInfo_dealloc(FSCatalogInfoObject *self)
 {
 	/* Cleanup of self->ob_itself goes here */
-	FSPermissionInfo* info = (FSPermissionInfo*)&(self->ob_itself.permissions);
-	if (info->fileSec != NULL) {
-		CFRelease(info->fileSec);
-	}
 	self->ob_type->tp_free((PyObject *)self);
 }