diff --git a/chertex.sh b/chertex.sh
index a4fc1f2..3b3f6a0 100755
--- a/chertex.sh
+++ b/chertex.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 ## Process *.Rnw files
 ## Written May 14, 2010
 ## Taha Ahmed