--- a/tests/test_hash_map.c	Thu May 15 15:43:30 2025 +0200
+++ b/tests/test_hash_map.c	Thu May 15 16:02:54 2025 +0200
@@ -665,8 +665,8 @@
         // verify that all pairs are present in the reference map
         for (size_t i = 0 ; i < map->collection.size ; i++) {
             CX_TEST_ASSERT(test_map_reference_get(pairs[i].key) == pairs[i].value);
-            // this was strdup'ed
-            free((void*)pairs[i].key);
+            // this was cx_strdup'ed
+            cxFree(cxDefaultAllocator, (void*)pairs[i].key);
         }
         free(pairs);
     }