diff --git a/gestion/lock.py b/gestion/lock.py
index ba155afd..4ccfd92f 100755
--- a/gestion/lock.py
+++ b/gestion/lock.py
@@ -122,7 +122,11 @@ def make_lock(lock_name, lock_comment='',nowait=0, quiet=False) :
 	    
     ### Prise du lock
     lock_fd = file(lock_file,"w")
-    lock_fd.write("%s\n%s\n%s" % (os.getpid(), getuser(), lock_comment) )
+    try:
+        utilisateur = getuser()
+    except:
+        utilisateur = "inconnu"
+    lock_fd.write("%s\n%s\n%s" % (os.getpid(), utilisateur, lock_comment) )
     lock_fd.close()
 
     # On enleve le verrou système