diff -r 3b071ea0e9cf -r c49104015a6b test/test_hash_key.cpp
--- a/test/test_hash_key.cpp	Sun Nov 06 14:17:33 2022 +0100
+++ b/test/test_hash_key.cpp	Sun Nov 06 14:46:59 2022 +0100
@@ -37,7 +37,8 @@
     auto str_key = cx_hash_key_str(str);
     auto bytes_key = cx_hash_key_bytes(
             reinterpret_cast<unsigned char const *>(str), len);
-    auto obj_key = cx_hash_key((void *) str, len);
+    auto obj_key = cx_hash_key(
+            reinterpret_cast<void const *>(str), len);
 
     EXPECT_EQ(str_key.hash, bytes_key.hash);
     EXPECT_EQ(obj_key.hash, bytes_key.hash);