diff --git a/base/base_tests/small_set_test.cpp b/base/base_tests/small_set_test.cpp
index 9a633ed9eb..6d0382ac4d 100644
--- a/base/base_tests/small_set_test.cpp
+++ b/base/base_tests/small_set_test.cpp
@@ -78,6 +78,11 @@ UNIT_TEST(SmallSet_Smoke)
   TEST_EQUAL(set.Size(), std::distance(set.begin(), set.end()), ());
 }
 
+bool BenchmarkTimeLessOrNear(uint64_t l, uint64_t r, double relativeTolerance)
+{
+  return (l < r) || ((l - r) / static_cast<double>(l) < relativeTolerance);
+}
+
 #ifndef DEBUG
 std::vector<uint32_t> GenerateIndices(uint32_t min, uint32_t max)
 {
@@ -131,7 +136,8 @@ UNIT_TEST(SmallMap_Benchmark1)
   }
 
   TEST_EQUAL(sum1, sum2, ());
-  TEST_LESS(t2, t1, ());
+  // At this moment, we have rare t2 > t1 on Linux CI.
+  TEST(BenchmarkTimeLessOrNear(t2, t1, 0.1), (t2, t1));
   LOG(LINFO, ("unordered_map time =", t1, "SmallMap time =", t2));
 }