diff --git a/plugins/utilities/natpmp_upnp.py b/plugins/utilities/natpmp_upnp.py
index 22fe39a..d35397c 100644
--- a/plugins/utilities/natpmp_upnp.py
+++ b/plugins/utilities/natpmp_upnp.py
@@ -168,18 +168,17 @@ def add_port_mapping():
     except (NATPMPUnsupportedError, NATPMPNetworkError):
         import upnpy
         from upnpy.exceptions import SOAPError
-        from urllib.error import HTTPError 
+        from urllib.error import HTTPError
 
         upnp = upnpy.UPnP()
         devices = upnp.discover()
-        
+
         if devices == []:
             babase.screenmessage(
                 "Please enable upnp service on your router", (1.00, 0.15, 0.15)
             )
             # bui.getsound('shieldDown').play() -> RuntimeError : Sound creation failed
             return
-        
 
         local_ip = (
             (
@@ -236,7 +235,6 @@ def add_port_mapping():
                             bui.getsound("shieldUp").play()
         except (SOAPError, HTTPError):
             babase.screenmessage('You will need to manualy add the port at the router :(')
-            
 
 
 @threaded
@@ -246,16 +244,17 @@ def delete_port_mapping():
 
     upnp = upnpy.UPnP()
     devices = upnp.discover()
-    
+
     if devices == []:
         return
-    
+
     try:
         for upnp_dev in devices:
             for service in upnp_dev.services:
                 if service in WAN_SERVICE_NAMES:
                     service = upnp_dev[service]
-                    service.DeletePortMapping(NewRemoteHost="", NewExternalPort=BS_PORT, NewProtocol="UDP")
+                    service.DeletePortMapping(
+                        NewRemoteHost="", NewExternalPort=BS_PORT, NewProtocol="UDP")
     except:
         pass
 
@@ -268,7 +267,7 @@ class Joinable(babase.Plugin):
             return
         else:
             add_port_mapping()
-            
+
     def on_app_shutdown(self) -> None:
         delete_port_mapping()