diff --git a/lib/identity_cache/cache_fetcher.rb b/lib/identity_cache/cache_fetcher.rb
index 3573a628..e25addc9 100644
--- a/lib/identity_cache/cache_fetcher.rb
+++ b/lib/identity_cache/cache_fetcher.rb
@@ -280,7 +280,7 @@ def client_id
 
     def cas_multi(keys)
       result = nil
-      @cache_backend.cas_multi(*keys) do |results|
+      @cache_backend.cas_multi(keys) do |results|
         deleted = results.select { |_, v| IdentityCache::DELETED == v }
         results.reject! { |_, v| IdentityCache::DELETED == v }