diff --git a/libc/kernel/tools/cpp.py b/libc/kernel/tools/cpp.py
index bca491b..fff80f6 100644
--- a/libc/kernel/tools/cpp.py
+++ b/libc/kernel/tools/cpp.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 """A glorified C pre-processor parser."""
 
 import ctypes