diff --git a/activesupport/lib/active_support/cache/mem_cache_store.rb b/activesupport/lib/active_support/cache/mem_cache_store.rb
index 15f82317bd..e99d65bdf2 100644
--- a/activesupport/lib/active_support/cache/mem_cache_store.rb
+++ b/activesupport/lib/active_support/cache/mem_cache_store.rb
@@ -97,7 +97,7 @@ module ActiveSupport
         options = merged_options(options)
 
         keys_to_names = Hash[names.map { |name| [normalize_key(name, options), name] }]
-        raw_values = @data.get_multi(keys_to_names.keys, raw: true)
+        raw_values = @data.get_multi(keys_to_names.keys)
         values = {}
         raw_values.each do |key, value|
           entry = deserialize_entry(value)