diff --git a/activesupport/test/cache/stores/mem_cache_store_test.rb b/activesupport/test/cache/stores/mem_cache_store_test.rb
index 4c88687354..cb584bdd0c 100644
--- a/activesupport/test/cache/stores/mem_cache_store_test.rb
+++ b/activesupport/test/cache/stores/mem_cache_store_test.rb
@@ -314,7 +314,11 @@ class MemCacheStoreTest < ActiveSupport::TestCase
     end
 
     def servers(cache = @cache)
-      client(cache).instance_variable_get(:@servers)
+      if client(cache).instance_variable_defined?(:@normalized_servers)
+        client(cache).instance_variable_get(:@normalized_servers)
+      else
+        client(cache).instance_variable_get(:@servers)
+      end
     end
 
     def client(cache = @cache)