diff --git a/src/drivers.py b/src/drivers.py
index f2e5a9d39..2c89dd49b 100644
--- a/src/drivers.py
+++ b/src/drivers.py
@@ -191,7 +191,7 @@ def newDriver(irc, moduleName=None):
             import twistedDrivers
             moduleName = 'supybot.twistedDrivers'
         except ImportError:
-            del sys.modules['supybot.twistedDrivers']
+            sys.modules.pop('supybot.twistedDrivers', None)
             moduleName = 'supybot.socketDrivers'
     elif not moduleName.startswith('supybot.'):
         moduleName = 'supybot.' + moduleName