diff --git a/src/libs/utils/smallstring.h b/src/libs/utils/smallstring.h
index 663ef566384..3a86d2435ce 100644
--- a/src/libs/utils/smallstring.h
+++ b/src/libs/utils/smallstring.h
@@ -658,18 +658,9 @@ unittest_public:
     {
         const size_type cacheLineSize = 64;
 
-        const auto divisionByCacheLineSize = std::div(int64_t(size), int64_t(cacheLineSize));
+        size_type cacheLineBlocks = (size - 1) / cacheLineSize;
 
-        size_type cacheLineBlocks = size_type(divisionByCacheLineSize.quot);
-        const size_type supplement = divisionByCacheLineSize.rem ? 1 : 0;
-
-        cacheLineBlocks += supplement;
-        int exponent;
-        const double significand = std::frexp(cacheLineBlocks, &exponent);
-        const double factorOneDotFiveSignificant = std::ceil(significand * 4.) / 4.;
-        cacheLineBlocks = size_type(std::ldexp(factorOneDotFiveSignificant, exponent));
-
-        return cacheLineBlocks * cacheLineSize;
+        return (cacheLineBlocks  + 1) * cacheLineSize;
     }
 
     size_type countOccurrence(SmallStringView text)
diff --git a/tests/unit/unittest/smallstring-test.cpp b/tests/unit/unittest/smallstring-test.cpp
index fb50c1d5949..ea18fcacc2d 100644
--- a/tests/unit/unittest/smallstring-test.cpp
+++ b/tests/unit/unittest/smallstring-test.cpp
@@ -1067,13 +1067,13 @@ TEST(SmallString, OptimalHeapCacheLineForSize)
     ASSERT_THAT(SmallString::optimalHeapCapacity(191), 192);
     ASSERT_THAT(SmallString::optimalHeapCapacity(193), 256);
     ASSERT_THAT(SmallString::optimalHeapCapacity(255), 256);
-    ASSERT_THAT(SmallString::optimalHeapCapacity(257), 384);
-    ASSERT_THAT(SmallString::optimalHeapCapacity(257), 384);
+    ASSERT_THAT(SmallString::optimalHeapCapacity(256), 256);
+    ASSERT_THAT(SmallString::optimalHeapCapacity(257), 320);
     ASSERT_THAT(SmallString::optimalHeapCapacity(383), 384);
-    ASSERT_THAT(SmallString::optimalHeapCapacity(385), 512);
+    ASSERT_THAT(SmallString::optimalHeapCapacity(385), 448);
     ASSERT_THAT(SmallString::optimalHeapCapacity(4095), 4096);
     ASSERT_THAT(SmallString::optimalHeapCapacity(4096), 4096);
-    ASSERT_THAT(SmallString::optimalHeapCapacity(4097), 6144);
+    ASSERT_THAT(SmallString::optimalHeapCapacity(4097), 4160);
 }
 
 TEST(SmallString, OptimalCapacityForSize)