diff --git a/tools/scan-build/set-xcode-analyzer b/tools/scan-build/set-xcode-analyzer
index cc068a5..133f9cc 100755
--- a/tools/scan-build/set-xcode-analyzer
+++ b/tools/scan-build/set-xcode-analyzer
@@ -1,4 +1,8 @@
-#!/usr/bin/env python
+#!/usr/bin/python
+
+# [PR 11661] Note that we hardwire to /usr/bin/python because we
+# want to the use the system version of Python on Mac OS X.
+# This one has the scripting bridge enabled.
 
 import os
 import sys