diff --git a/src/test/unit/unit_hash_smart_ptr.cpp b/src/test/unit/unit_hash_smart_ptr.cpp
index 4881d6d1..7d635fe4 100644
--- a/src/test/unit/unit_hash_smart_ptr.cpp
+++ b/src/test/unit/unit_hash_smart_ptr.cpp
@@ -13,11 +13,11 @@ void check(Ptr const& ptr) {
 TEST_CASE("unit_hash_smart_ptr") {
     check(std::unique_ptr<uint64_t>{});
     check(std::shared_ptr<uint64_t>{});
-    check(std::make_shared<uint64_t>(123));
+    check(std::make_shared<uint64_t>(123U));
 
 #if ROBIN_HOOD(CXX) >= ROBIN_HOOD(CXX14)
-    check(std::make_unique<uint64_t>(123));
+    check(std::make_unique<uint64_t>(123U));
 #else
-    check(std::unique_ptr<uint64_t>{new uint64_t{123}});
+    check(std::unique_ptr<uint64_t>{new uint64_t{123U}});
 #endif
 }
diff --git a/src/test/unit/unit_hash_string_view.cpp b/src/test/unit/unit_hash_string_view.cpp
index 26409f39..279d1af4 100644
--- a/src/test/unit/unit_hash_string_view.cpp
+++ b/src/test/unit/unit_hash_string_view.cpp
@@ -22,7 +22,7 @@ TEST_CASE("unit_hash_u32string") {
     str.push_back(5);
 
     REQUIRE(robin_hood::hash<std::u32string>{}(str) ==
-            robin_hood::hash<std::u32string_view>{}(std::u32string_view{str}));
+            robin_hood::hash<std::u32string_view>{}(str));
 }
 
 #endif