diff --git a/others/lru_cache.cpp b/others/lru_cache.cpp
index 6a113b287..199a24937 100644
--- a/others/lru_cache.cpp
+++ b/others/lru_cache.cpp
@@ -215,7 +215,7 @@ static void test_3() {
 
     log("Running Test-3...");
 
-    lru_cache::LRUCache cache(4);
+    others::lru_cache::LRUCache cache(4);
     cache.refer(1);
     cache.refer(2);
     cache.refer(3);