diff --git a/testcases/filtertestcase.py b/testcases/filtertestcase.py
index 2061327a..8bc24085 100644
--- a/testcases/filtertestcase.py
+++ b/testcases/filtertestcase.py
@@ -306,36 +306,7 @@ class LogFileMonitor(unittest.TestCase):
 
 
 from threading import Lock
-class DummyJail(object):
-	"""A simple 'jail' to suck in all the tickets generated by Filter's
-	"""
-	def __init__(self):
-		self.lock = Lock()
-		self.queue = []
-
-	def __len__(self):
-		try:
-			self.lock.acquire()
-			return len(self.queue)
-		finally:
-			self.lock.release()
-
-	def putFailTicket(self, ticket):
-		try:
-			self.lock.acquire()
-			self.queue.append(ticket)
-		finally:
-			self.lock.release()
-
-	def getFailTicket(self):
-		try:
-			self.lock.acquire()
-			return self.queue.pop()
-		finally:
-			self.lock.release()
-
-	def getName(self):
-		return "DummyJail #%s with %d tickets" % (id(self), len(self))
+from dummyjail import DummyJail
 
 def get_monitor_failures_testcase(Filter_):
 	"""Generator of TestCase's for different filters/backends