diff --git a/Tests/check_jp2_overflow.py b/Tests/check_jp2_overflow.py
old mode 100755
new mode 100644
index 5adbb84b6..954d68bf7
--- a/Tests/check_jp2_overflow.py
+++ b/Tests/check_jp2_overflow.py
@@ -1,5 +1,3 @@
-#!/usr/bin/env python3
-
 # Reproductions/tests for OOB read errors in FliDecode.c
 
 # When run in python, all of these images should fail for