diff --git a/wagtail/contrib/wagtailroutablepage/tests.py b/wagtail/contrib/wagtailroutablepage/tests.py
index 5ca9f06b4..0a77065ee 100644
--- a/wagtail/contrib/wagtailroutablepage/tests.py
+++ b/wagtail/contrib/wagtailroutablepage/tests.py
@@ -141,8 +141,6 @@ class TestOldStyleRoutablePage(TestNewStyleRoutablePage, WagtailTestUtils):
         from django.conf.urls import url
 
         class TestPageModel(RoutablePageMixin, Page):
-            abstract = True
-
             subpage_urls = (
                 url('r^$', 'main'),
             )
@@ -150,6 +148,9 @@ class TestOldStyleRoutablePage(TestNewStyleRoutablePage, WagtailTestUtils):
             def main(self, request):
                 pass
 
+            class Meta:
+                abstract = True
+
         # Calling check() should raise a deprecation warning
         # This would usually be called by Django when it loads
         self.reset_warning_registry()