diff --git a/src/DIRAC/Resources/Computing/BatchSystems/Host.py b/src/DIRAC/Resources/Computing/BatchSystems/Host.py
index b65de5baf35..cf3dbe69b30 100644
--- a/src/DIRAC/Resources/Computing/BatchSystems/Host.py
+++ b/src/DIRAC/Resources/Computing/BatchSystems/Host.py
@@ -71,7 +71,7 @@ def submitJob(self, **kwargs):
             os.unlink(runFileName)
         runFile = open(runFileName, "w")
         runFile.write(
-            """
+            """#!/bin/bash
 ( exec </dev/null
 #  echo $2
   exec > $2