diff --git a/idl/mutation.idl.hh b/idl/mutation.idl.hh
index b287aa5ebd..e593986015 100644
--- a/idl/mutation.idl.hh
+++ b/idl/mutation.idl.hh
@@ -83,7 +83,7 @@ class deletable_row stub [[writable]] {
 };
 
 class range_tombstone stub [[writable]] {
-    clustering_key key;
+    clustering_key_prefix start;
     tombstone tomb;
 };
 
@@ -118,4 +118,4 @@ class canonical_mutation stub [[writable]] {
     partition_key key;
     column_mapping mapping;
     mutation_partition partition;
-}
\ No newline at end of file
+}
diff --git a/mutation_partition_serializer.cc b/mutation_partition_serializer.cc
index a9328d8b09..047500c5f1 100644
--- a/mutation_partition_serializer.cc
+++ b/mutation_partition_serializer.cc
@@ -146,7 +146,7 @@ void mutation_partition_serializer::write_serialized(Writer&& writer, const sche
     auto srow_writer = std::move(writer).write_tomb(mp.partition_tombstone()).start_static_row();
     auto row_tombstones = write_row_cells(std::move(srow_writer), mp.static_row(), s, column_kind::static_column).end_static_row().start_range_tombstones();
     for (auto&& rt : mp.row_tombstones()) {
-        row_tombstones.add().write_key(rt.prefix()).write_tomb(rt.t()).end_range_tombstone();
+        row_tombstones.add().write_start(rt.prefix()).write_tomb(rt.t()).end_range_tombstone();
     }
     auto clustering_rows = std::move(row_tombstones).end_range_tombstones().start_rows();
     for (auto&& cr : mp.clustered_rows()) {
diff --git a/mutation_partition_view.cc b/mutation_partition_view.cc
index a861a2b92b..da1c9f0180 100644
--- a/mutation_partition_view.cc
+++ b/mutation_partition_view.cc
@@ -173,9 +173,9 @@ mutation_partition_view::accept(const column_mapping& cm, mutation_partition_vis
     read_and_visit_row(mpv.static_row(), cm, column_kind::static_column, static_row_cell_visitor{visitor});
 
     for (auto&& rt : mpv.range_tombstones()) {
-        visitor.accept_row_tombstone(rt.key(), rt.tomb());
+        visitor.accept_row_tombstone(rt.start(), rt.tomb());
     }
-    
+
     for (auto&& cr : mpv.rows()) {
         visitor.accept_row(cr.key(), cr.deleted_at(), read_row_marker(cr.marker()));