diff --git a/gestion/lock.py b/gestion/lock.py
index 310b550b..1cce5dfb 100755
--- a/gestion/lock.py
+++ b/gestion/lock.py
@@ -79,6 +79,9 @@ def make_lock(lock_name, lock_comment='',nowait=0, quiet=False) :
         else:
             # La procédure de lock est deja en cours d'execution, on essaie un peu plus tard
             time.sleep(0.5)
+            # On enleve le verrou système
+            lockf(lock_fd_dl, LOCK_UN)
+            lock_fd_dl.close()
             return make_lock(lock_name, lock_comment)
 
     if os.path.isfile(lock_file) :
@@ -132,6 +135,9 @@ def make_lock(lock_name, lock_comment='',nowait=0, quiet=False) :
                 time.sleep(1)
                 a.cycle()
             sys.stdout.write('\r')
+            # On enleve le verrou système
+            lockf(lock_fd_dl, LOCK_UN)
+            lock_fd_dl.close()
             return make_lock(lock_name, lock_comment)
             
     ### Prise du lock