diff --git a/src/Makefile b/src/Makefile
index 57b158f16ffcefc0f28ef9192ff29175a580f425..aacc4b742aabf2f4f94f46b100309bb1052b0103 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2,6 +2,7 @@
 #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
 #MNH_LIC for details. version 1.
+SHELL='/bin/bash'
 ##########################################################
 #                                                        #
 #  MACRO : dependance_flist                              #