diff --git a/pandora-box.py b/pandora-box.py
index b902d0c..e938e86 100755
--- a/pandora-box.py
+++ b/pandora-box.py
@@ -599,7 +599,7 @@ class PandoraBox:
             # check key is still here
             try:
                 os.statvfs(self.mount_point)
-            except Exception :
+            except Exception:
                 self._log("Device not cleaned !")
                 logging.info('device_not_cleaned')
                 return "WAIT"