diff --git a/utils/src/mkdtboimg.py b/utils/src/mkdtboimg.py
index bc33e1f..5eeb5ea 100755
--- a/mkdtboimg.py
+++ b/mkdtboimg.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 # Copyright 2017, The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
