diff --git a/test/set-ddr b/test/set-ddr
index 5d061b95..33631f31 100755
--- a/test/set-ddr
+++ b/test/set-ddr
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
 
 import sys
 import dbus