diff --git a/src/fsfw/util/ObjectId.h b/src/fsfw/util/ObjectId.h
index b51f63e69..5b1cf461c 100644
--- a/src/fsfw/util/ObjectId.h
+++ b/src/fsfw/util/ObjectId.h
@@ -50,7 +50,7 @@ struct std::hash<ObjectId>
 {
   std::size_t operator()(ObjectId const& s) const noexcept
   {
-    return std::hash<uint32_t>{}(s.id());
+    return std::hash<object_id_t>{}(s.id());
   }
 };