diff --git a/src/rntuple.cpp b/src/rntuple.cpp
index 3d69631..143921d 100644
--- a/src/rntuple.cpp
+++ b/src/rntuple.cpp
@@ -92,7 +92,6 @@ void gather_ntuple_metadata(Arena *arena, RMicroFileReader &reader, const RNTupl
   Page_Info_Node *pinfo_head = nullptr, *pinfo_tail = nullptr;
   Page_Info_Node *last_inserted_pinfo = nullptr;
 
-  Cluster_Info_Node *clinfo_head = nullptr, *clinfo_tail = nullptr;
   u64 n_clusters = 0;
       
   chr::time_point start_t = chr::high_resolution_clock::now();
@@ -100,13 +99,6 @@ void gather_ntuple_metadata(Arena *arena, RMicroFileReader &reader, const RNTupl
 
   // gather clusters and pages metadata
   for (const RClusterDescriptor &cluster_desc : descriptor.GetClusterIterable()) {
-    if (!clinfo_head) {
-      clinfo_head = clinfo_tail = arena_push<Cluster_Info_Node>(arena);
-    } else {
-      Cluster_Info_Node *clinfo = arena_push<Cluster_Info_Node>(arena);
-      clinfo_tail->next = clinfo;
-      clinfo_tail = clinfo;
-    }
     ++n_clusters;
 
     for (const RClusterDescriptor::RColumnRange &col_range : cluster_desc.GetColumnRangeIterable()) {
@@ -213,7 +205,6 @@ void gather_ntuple_metadata(Arena *arena, RMicroFileReader &reader, const RNTupl
 
   assert(!chunks_tail->next);
   assert(!pinfo_tail->next);
-  assert(!clinfo_tail->next);
 
   rndata.pages = pinfo_head;
   rndata.page_groups = groups;
@@ -226,7 +217,6 @@ void gather_ntuple_metadata(Arena *arena, RMicroFileReader &reader, const RNTupl
   rndata.cluster_groups = cluster_groups;
   rndata.n_cluster_groups = cg_idx;
   rndata.tot_page_list_size = tot_page_list_size;
-  rndata.clusters = clinfo_head;
   rndata.n_clusters = n_clusters;
 }
 
diff --git a/src/rntuple.h b/src/rntuple.h
index a647e29..40fa6cd 100644
--- a/src/rntuple.h
+++ b/src/rntuple.h
@@ -36,10 +36,6 @@ struct Page_Info_Chunk {
   u32 first_group;
 };
 
-struct Cluster_Info_Node {
-  Cluster_Info_Node *next;
-};
-
 struct Cluster_Group_Info {
   Byte_Range rng_page_list;
 };
@@ -80,7 +76,6 @@ struct RNTuple_Data {
   u64 n_cluster_groups;
   u64 tot_page_list_size;
 
-  Cluster_Info_Node *clusters;
   u64 n_clusters;
 
   Page_Info_Group *page_groups;