diff --git a/with/memory.go b/with/memory.go
index 85ce176..2236fc7 100644
--- a/with/memory.go
+++ b/with/memory.go
@@ -11,7 +11,7 @@ import (
 
 func Memory(cli *bigcache.BigCache, opts *bigcache.Config) {
 	if opts == nil {
-		opts = bigcache.Config{
+		opts = &bigcache.Config{
 			Shards:             1024,
 			LifeWindow:         10 * time.Minute,
 			CleanWindow:        5 * time.Minute,