diff --git a/tests/test_SmallVector.cc b/tests/test_SmallVector.cc
index 6cf05f5..bd1f78a 100644
--- a/tests/test_SmallVector.cc
+++ b/tests/test_SmallVector.cc
@@ -1313,9 +1313,9 @@ TEST_CASE("SmallVector: insert(ConstIterator, InputIterator, InputIterator)", "[
 
     for (int n = 0; n != 50; ++n)
     {
-        unsigned int num_elements = dist(gen) % 10;
+        unsigned int num_elements = dist(gen) % 10u;
         unsigned int insert_idx =
-            (vec.size() == 0) ? 0 : (dist(gen) % vec.size());
+            vec.empty() ? 0u : (dist(gen) % static_cast<unsigned int>(vec.size()));
 
         std::vector<unsigned int> new_elements(num_elements);
         std::generate(new_elements.begin(), new_elements.end(), [&]() { return dist(gen) % 100; });