diff --git a/bin/Lfi2cdf b/bin/Lfi2cdf
index c62827b7e887ff5266017f462287c3871ee94889..c4a16a55f17730360fcd9e08b35af4e0a6172534 100755
--- a/bin/Lfi2cdf
+++ b/bin/Lfi2cdf
@@ -1,3 +1,4 @@
+#!/bin/bash
 #MNH_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier
 #MNH_LIC This is part of the Meso-NH software governed by the CeCILL-C licence
 #MNH_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt