diff --git a/env.sh b/env.sh
index 5080b00650f7b..dd884c9a68772 100755
--- a/env.sh
+++ b/env.sh
@@ -1,6 +1,6 @@
-#!/bin/sh
+#!/bin/bash
 
-function getabsolutepath(){
+getabsolutepath() {
 	[ -d "$1" ] && { cd "$1"; echo "$(pwd -P)"; } ||
 	{ cd "$(dirname "$1")"; echo "$(pwd -P)/$(basename "$1")"; }
 }