diff --git a/tests/test_cmdline_tool.py b/tests/test_cmdline_tool.py
index 5a2b9a6c..1d6fe9a7 100755
--- a/tests/test_cmdline_tool.py
+++ b/tests/test_cmdline_tool.py
@@ -1,3 +1,4 @@
+#!/usr/bin/python
 #
 # Regression test driver for cmd-line tools
 #