diff --git a/sorting/count_inversions.cpp b/sorting/count_inversions.cpp
index 571fbe56e..12994ee6e 100644
--- a/sorting/count_inversions.cpp
+++ b/sorting/count_inversions.cpp
@@ -201,7 +201,7 @@ static void test() {
     assert(inv_count1 == result1);
     // Test 2
     std::vector<int> arr2 = {22, 66, 75, 23, 11, 87, 2, 44, 98, 43};
-    uint64_t size2 = arr2.size();
+    uint16_t size2 = arr2.size();
     uint64_t inv_count2 = 20;
     uint64_t result2 = sorting::inversion::countInversion(arr2.data(), size2);
     assert(inv_count2 == result2);