diff --git a/imageknife/src/main/ets/components/cache/DiskLruCache.ets b/imageknife/src/main/ets/components/cache/DiskLruCache.ets
index 62ce4fa..35594a4 100644
--- a/imageknife/src/main/ets/components/cache/DiskLruCache.ets
+++ b/imageknife/src/main/ets/components/cache/DiskLruCache.ets
@@ -162,6 +162,7 @@ export class DiskLruCache {
    */
   setMaxSize(max: number) {
     this.maxSize = max
+    this.trimToSize()
   }
 
   /**