diff --git a/scripts/tests/IceGrid/simple.py b/scripts/tests/IceGrid/simple.py
index 86294a0ef92..388bf710414 100644
--- a/scripts/tests/IceGrid/simple.py
+++ b/scripts/tests/IceGrid/simple.py
@@ -4,7 +4,7 @@
 #
 
 import os
-import re
+
 from IceGridUtil import (
     IceGridRegistryMaster,
     IceGridRegistrySlave,
@@ -41,12 +41,6 @@ def clientProps(process, current):
 
 clientTraceProps = {"IceLocatorDiscovery.Trace.Lookup": 3, "Ice.Trace.Network": 1}
 
-# Filter-out the warning about invalid lookup proxy
-outfilters = [
-    lambda x: re.sub("-! .* warning: .*failed to lookup locator.*\n", "", x),
-    lambda x: re.sub("^   .*\n", "", x),
-]
-
 if isinstance(platform, Windows) or os.getuid() != 0:
     TestSuite(
         __name__,
@@ -68,7 +62,6 @@ def clientProps(process, current):
                 client=ClientServerTestCase(
                     client=IceGridClient(
                         props=clientProps,
-                        outfilters=outfilters,
                         traceProps=clientTraceProps,
                     ),
                     server=IceGridServer(props=serverProps, traceProps=serverTraceProps),