diff --git a/be/src/io/cache/block_file_cache.cpp b/be/src/io/cache/block_file_cache.cpp
index 47940b9e83afa4..a7a199355a1769 100644
--- a/be/src/io/cache/block_file_cache.cpp
+++ b/be/src/io/cache/block_file_cache.cpp
@@ -206,13 +206,13 @@ BlockFileCache::BlockFileCache(const std::string& cache_base_path,
     _cur_disposable_queue_cache_size_metrics = std::make_shared<bvar::Status<size_t>>(
             _cache_base_path.c_str(), "file_cache_disposable_queue_cache_size", 0);
 
-    _queue_evict_size_metrics[0] = std::make_shared<bvar::Adder<size_t>>(
-            _cache_base_path.c_str(), "file_cache_index_queue_evict_size");
-    _queue_evict_size_metrics[1] = std::make_shared<bvar::Adder<size_t>>(
-            _cache_base_path.c_str(), "file_cache_normal_queue_evict_size");
-    _queue_evict_size_metrics[2] = std::make_shared<bvar::Adder<size_t>>(
+    _queue_evict_size_metrics[FileCacheType::DISPOSABLE] = std::make_shared<bvar::Adder<size_t>>(
             _cache_base_path.c_str(), "file_cache_disposable_queue_evict_size");
-    _queue_evict_size_metrics[3] = std::make_shared<bvar::Adder<size_t>>(
+    _queue_evict_size_metrics[FileCacheType::NORMAL] = std::make_shared<bvar::Adder<size_t>>(
+            _cache_base_path.c_str(), "file_cache_normal_queue_evict_size");
+    _queue_evict_size_metrics[FileCacheType::INDEX] = std::make_shared<bvar::Adder<size_t>>(
+            _cache_base_path.c_str(), "file_cache_index_queue_evict_size");
+    _queue_evict_size_metrics[FileCacheType::TTL] = std::make_shared<bvar::Adder<size_t>>(
             _cache_base_path.c_str(), "file_cache_ttl_cache_evict_size");
     _total_evict_size_metrics = std::make_shared<bvar::Adder<size_t>>(
             _cache_base_path.c_str(), "file_cache_total_evict_size");
@@ -1554,7 +1554,7 @@ void BlockFileCache::remove(FileBlockSPtr file_block, T& cache_lock, U& block_lo
                                           cell->file_block->get_hash_value(),
                                           cell->file_block->offset(), cell->size());
     }
-    *_queue_evict_size_metrics[static_cast<int>(file_block->cache_type())]
+    *_queue_evict_size_metrics[file_cache_type_index(file_block->cache_type())]
             << file_block->range().size();
     *_total_evict_size_metrics << file_block->range().size();