diff --git a/art/seafire/representation/metadata.hxx b/art/seafire/representation/metadata.hxx
index 791e14a..980d8f1 100644
--- a/art/seafire/representation/metadata.hxx
+++ b/art/seafire/representation/metadata.hxx
@@ -24,7 +24,7 @@ namespace art::seafire::representation
   {
     using local_traits = traits::representation_traits<BR>;
 
-    if constexpr (local_traits::has_entity_tag_t)
+    if constexpr (local_traits::has_entity_tag)
       return rep.etag();
 
     return std::nullopt;
@@ -37,7 +37,6 @@ namespace art::seafire::representation
     return rep.etag();
   }
 
-
   // last-modified
   //
   template<BasicRepresentation BR>