diff --git a/bin/tools/openfoam b/bin/tools/openfoam
index 27997ce3dc..0ff54e9d02 100755
--- a/bin/tools/openfoam
+++ b/bin/tools/openfoam
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 #------------------------------------------------------------------------------
 # =========                 |
 # \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox