diff --git a/wagtail/api/v2/pagination.py b/wagtail/api/v2/pagination.py
index 3bfdac7e1..089d99547 100644
--- a/wagtail/api/v2/pagination.py
+++ b/wagtail/api/v2/pagination.py
@@ -36,8 +36,7 @@ class WagtailPagination(BasePagination):
         stop = offset + limit
 
         self.view = view
-        self.total_count = (queryset.count() if isinstance(queryset, QuerySet) or
-                            isinstance(queryset, BaseSearchResults) else len(queryset))
+        self.total_count = queryset.count() if isinstance(queryset, (BaseSearchResults, QuerySet)) else len(queryset)
         return queryset[start:stop]
 
     def get_paginated_response(self, data):
diff --git a/wagtail/contrib/wagtailapi/pagination.py b/wagtail/contrib/wagtailapi/pagination.py
index b8c72b4dc..4182a3f98 100644
--- a/wagtail/contrib/wagtailapi/pagination.py
+++ b/wagtail/contrib/wagtailapi/pagination.py
@@ -36,8 +36,7 @@ class WagtailPagination(BasePagination):
         stop = offset + limit
 
         self.view = view
-        self.total_count = (queryset.count() if isinstance(queryset, QuerySet) or
-                            isinstance(queryset, BaseSearchResults) else len(queryset))
+        self.total_count = queryset.count() if isinstance(queryset, (BaseSearchResults, QuerySet)) else len(queryset)
         return queryset[start:stop]
 
     def get_paginated_response(self, data):