diff --git a/bin/Mpirun b/bin/Mpirun
index a17fb8255685db0979e45334e0c91aad8f75197b..f1da14a45e8d8206d8a0cd3de833608aadabc4d0 100755
--- a/bin/Mpirun
+++ b/bin/Mpirun
@@ -3,7 +3,7 @@
 #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.
-set -x
+#set -x
 NARGS=$#
 let "N_1=${NARGS} - 1"
 export N_1