diff --git a/tests/rest/client/test_room_access_rules.py b/tests/rest/client/test_room_access_rules.py
index 7039a5c4d6..65d27e9165 100644
--- a/tests/rest/client/test_room_access_rules.py
+++ b/tests/rest/client/test_room_access_rules.py
@@ -22,6 +22,7 @@ from twisted.internet import defer
 
 from synapse.api.constants import EventTypes, JoinRules, Membership, RoomCreationPreset
 from synapse.api.errors import SynapseError
+from synapse.events.third_party_rules import load_legacy_third_party_event_rules
 from synapse.rest import admin
 from synapse.rest.client import directory, login, room
 from synapse.third_party_rules.access_rules import (
@@ -108,6 +109,8 @@ class RoomAccessTestCase(unittest.HomeserverTestCase):
 
         self.third_party_event_rules = self.hs.get_third_party_event_rules()
 
+        load_legacy_third_party_event_rules(self.hs)
+
         return self.hs
 
     def prepare(self, reactor, clock, homeserver):
diff --git a/tests/rulecheck/test_domainrulecheck.py b/tests/rulecheck/test_domainrulecheck.py
index 245ffe87e1..eee980c9a6 100644
--- a/tests/rulecheck/test_domainrulecheck.py
+++ b/tests/rulecheck/test_domainrulecheck.py
@@ -18,6 +18,7 @@ import json
 
 import synapse.rest.admin
 from synapse.config._base import ConfigError
+from synapse.events.spamcheck import load_legacy_spam_checkers
 from synapse.rest.client import login, room
 from synapse.rulecheck.domain_rule_checker import DomainRuleChecker
 
@@ -179,6 +180,7 @@ class DomainRuleCheckerRoomTestCase(unittest.HomeserverTestCase):
         }
 
         hs = self.setup_test_homeserver(config=config)
+        load_legacy_spam_checkers(hs)
         return hs
 
     def prepare(self, reactor, clock, hs):