diff --git a/tools/make-frozen.py b/tools/make-frozen.py
index 704999e61ce4b0f29e36d67f5fc99752aba9d6a7..18368e218f0a72175e75748acedc15805e65f5ad 100755
--- a/tools/make-frozen.py
+++ b/tools/make-frozen.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 #
 # Create frozen modules structure for MicroPython.
 #