diff --git a/utils/build_externals.py b/utils/build_externals.py
index bb350dd..34f3790 100755
--- a/utils/build_externals.py
+++ b/utils/build_externals.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python2
 #
 # Please keep this code python 2.4 compatible and standalone.