diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
index 9d37aa4..7f4c417 100755
--- a/scripts/checkstack.pl
+++ b/scripts/checkstack.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#!/usr/bin/env perl
 
 #	Check the stack usage of functions
 #