diff --git a/util/options.cc b/util/options.cc
index 7f1520a74..17dad0f25 100644
--- a/util/options.cc
+++ b/util/options.cc
@@ -154,7 +154,8 @@ ColumnFamilyOptions::ColumnFamilyOptions(const Options& options)
       max_successive_merges(options.max_successive_merges),
       min_partial_merge_operands(options.min_partial_merge_operands) {
   assert(memtable_factory.get() != nullptr);
-  if (max_bytes_for_level_multiplier_additional.size() < num_levels) {
+  if (max_bytes_for_level_multiplier_additional.size() <
+      static_cast<unsigned int>(num_levels)) {
     max_bytes_for_level_multiplier_additional.resize(num_levels, 1);
   }
 }