diff --git a/test/utility/type_traits.cpp b/test/utility/type_traits.cpp
index 0a61648..e1e9473 100644
--- a/test/utility/type_traits.cpp
+++ b/test/utility/type_traits.cpp
@@ -60,7 +60,7 @@
     using namespace testing;
 
     // std::map has member_contains from c++20
-    ASSERT_THAT((has_member_contains_v<std::map<std::string, int>>), Eq(false));
+    ASSERT_THAT((has_member_contains_v<std::map<std::string, int>>), Eq(true));
     ASSERT_THAT(
         (has_member_contains_v<std::vector<std::pair<std::string, int>>>),
         Eq(false));