diff --git a/be/src/io/cache/fs_file_cache_storage.cpp b/be/src/io/cache/fs_file_cache_storage.cpp
index 0860265e181bb3..caf30678439f37 100644
--- a/be/src/io/cache/fs_file_cache_storage.cpp
+++ b/be/src/io/cache/fs_file_cache_storage.cpp
@@ -877,9 +877,9 @@ void FSFileCacheStorage::load_cache_info_into_memory(BlockFileCache* _mgr) const
 
     // If the difference is more than threshold, load from filesystem as well
     if (estimated_file_count > 100) {
-        double difference_ratio =
-                (static_cast<double>(estimated_file_count) - static_cast<double>(db_block_count)) /
-                static_cast<double>(estimated_file_count);
+        double absolute_difference = std::abs(static_cast<double>(estimated_file_count) -
+                                              static_cast<double>(db_block_count));
+        double difference_ratio = absolute_difference / static_cast<double>(estimated_file_count);
 
         if (difference_ratio > config::file_cache_meta_store_vs_file_system_diff_num_threshold) {
             LOG(WARNING) << "Significant difference between DB blocks (" << db_block_count