diff --git a/util/gem5img.py b/util/gem5img.py
index f02ccb1..607f034 100755
--- a/util/gem5img.py
+++ b/util/gem5img.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python2.7
 #
 # gem5img.py
 # Script for managing a gem5 disk image.