diff --git a/UD_any/launchBatches.py b/UD_any/launchBatches.py
index 8af6e6a2f2c5130dcf31205f10323b1d51d19941..8db6ab9cfc91a33e08306673a1cbe4105321629a 100755
--- a/UD_any/launchBatches.py
+++ b/UD_any/launchBatches.py
@@ -46,7 +46,7 @@ def launchTrainOar(mode, expName, arguments, nbHours, jobIndex) :
   command += " -O %s.stdout"%expName
   command += " -p \"gpu IS NOT NULL\""
   command += " -l walltime=%d:00:00"%nbHours
-  command += " \"" + "./train.sh %s bin/%s %s --silent %s"%(mode,expName,arguments,devScore) + "\""
+  command += " \'" + "./train.sh %s bin/%s %s --silent %s"%(mode,expName,arguments,devScore) + "\'"
 
   os.system(command)
 ###############################################################################