diff --git a/src/proto_017_PtNairob/lib_sc_rollup_node/daemon.ml b/src/proto_017_PtNairob/lib_sc_rollup_node/daemon.ml
index e0bdbdac1fbce7e34c0bea68cb1b9a3145a925c5..5dfc35cbff027f4e6d80226d74778b2ad8f78989 100644
--- a/src/proto_017_PtNairob/lib_sc_rollup_node/daemon.ml
+++ b/src/proto_017_PtNairob/lib_sc_rollup_node/daemon.ml
@@ -155,8 +155,8 @@ module Make (PVM : Pvm.S) = struct
           rollup
           their_commitment
           their_commitment_hash
-    | Sc_rollup_cement {commitment; _}, Sc_rollup_cement_result {inbox_level; _}
-      ->
+    | ( Sc_rollup_cement _,
+        Sc_rollup_cement_result {inbox_level; commitment_hash; _} ) ->
         (* Cemented commitment ---------------------------------------------- *)
         let* inbox_block =
           Node_context.get_l2_block_by_level
@@ -169,20 +169,22 @@ module Make (PVM : Pvm.S) = struct
             (Option.equal
                Sc_rollup.Commitment.Hash.( = )
                inbox_block.header.commitment_hash
-               (Some commitment))
+               (Some commitment_hash))
             (Sc_rollup_node_errors.Disagree_with_cemented
                {
                  inbox_level;
                  ours = inbox_block.header.commitment_hash;
-                 on_l1 = commitment;
+                 on_l1 = commitment_hash;
                })
         in
         let lcc = Reference.get node_ctxt.lcc in
         let*! () =
           if Raw_level.(inbox_level > lcc.level) then (
-            Reference.set node_ctxt.lcc {commitment; level = inbox_level} ;
+            Reference.set
+              node_ctxt.lcc
+              {commitment = commitment_hash; level = inbox_level} ;
             Commitment_event.last_cemented_commitment_updated
-              commitment
+              commitment_hash
               inbox_level)
           else Lwt.return_unit
         in
diff --git a/src/proto_alpha/lib_sc_rollup_node/daemon.ml b/src/proto_alpha/lib_sc_rollup_node/daemon.ml
index 4fa33b9e0b4f03b4e08fb081e3bc2a61797d74ea..d795b32847e7ec22ec1727c2d4270aade8b8744e 100644
--- a/src/proto_alpha/lib_sc_rollup_node/daemon.ml
+++ b/src/proto_alpha/lib_sc_rollup_node/daemon.ml
@@ -155,8 +155,8 @@ module Make (PVM : Pvm.S) = struct
           rollup
           their_commitment
           their_commitment_hash
-    | Sc_rollup_cement {commitment; _}, Sc_rollup_cement_result {inbox_level; _}
-      ->
+    | ( Sc_rollup_cement _,
+        Sc_rollup_cement_result {inbox_level; commitment_hash; _} ) ->
         (* Cemented commitment ---------------------------------------------- *)
         let* inbox_block =
           Node_context.get_l2_block_by_level
@@ -169,20 +169,22 @@ module Make (PVM : Pvm.S) = struct
             (Option.equal
                Sc_rollup.Commitment.Hash.( = )
                inbox_block.header.commitment_hash
-               (Some commitment))
+               (Some commitment_hash))
             (Sc_rollup_node_errors.Disagree_with_cemented
                {
                  inbox_level;
                  ours = inbox_block.header.commitment_hash;
-                 on_l1 = commitment;
+                 on_l1 = commitment_hash;
                })
         in
         let lcc = Reference.get node_ctxt.lcc in
         let*! () =
           if Raw_level.(inbox_level > lcc.level) then (
-            Reference.set node_ctxt.lcc {commitment; level = inbox_level} ;
+            Reference.set
+              node_ctxt.lcc
+              {commitment = commitment_hash; level = inbox_level} ;
             Commitment_event.last_cemented_commitment_updated
-              commitment
+              commitment_hash
               inbox_level)
           else Lwt.return_unit
         in
diff --git a/tezt/tests/sc_rollup.ml b/tezt/tests/sc_rollup.ml
index edbb7c45d1d92eb18c643986137e6b3e31db69f0..33fa101e90487fbb28eb0f37bfcf28ec3b976c39 100644
--- a/tezt/tests/sc_rollup.ml
+++ b/tezt/tests/sc_rollup.ml
@@ -2763,6 +2763,42 @@ let test_consecutive_commitments _protocol _rollup_node _rollup_client sc_rollup
   in
   unit
 
+let test_cement_ignore_commitment ~kind =
+  let commitment_period = 3 in
+  let challenge_window = 3 in
+  test_commitment_scenario
+    ~commitment_period
+    ~challenge_window
+    ~kind
+    ~variant:"cement_ignore_commitment"
+  @@ fun protocol _sc_rollup_node _sc_rollup_client sc_rollup node client ->
+  let sc_rollup_node =
+    Sc_rollup_node.create
+      ~protocol
+      Custom
+      node
+      ~base_dir:(Client.base_dir client)
+      ~operators:[("publish", Constant.bootstrap1.alias)]
+    (* Don't cement commitments *)
+  in
+  let* () =
+    Sc_rollup_node.run ~event_level:`Debug sc_rollup_node sc_rollup []
+  in
+  let* _level = Sc_rollup_node.wait_sync ~timeout:3. sc_rollup_node in
+  let* _level = bake_until_lpc_updated client sc_rollup_node in
+  let* _level = Sc_rollup_node.wait_sync ~timeout:10. sc_rollup_node in
+  let* () = bake_levels challenge_window client in
+  let* _level = Sc_rollup_node.wait_sync ~timeout:10. sc_rollup_node in
+  let* () =
+    let hash =
+      (* zero commitment hash *)
+      "src12UJzB8mg7yU6nWPzicH7ofJbFjyJEbHvwtZdfRXi8DQHNp1LY8"
+    in
+    cement_commitment client ~sc_rollup ~hash
+  in
+  let* _level = Sc_rollup_node.wait_sync ~timeout:10. sc_rollup_node in
+  unit
+
 (* Refutation game scenarios
    -------------------------
 *)
@@ -5168,6 +5204,7 @@ let register ~kind ~protocols =
     test_consecutive_commitments
     protocols
     ~kind ;
+  test_cement_ignore_commitment ~kind [Nairobi; Alpha] ;
   (* TODO: https://gitlab.com/tezos/tezos/-/issues/4373
      Uncomment this test as soon as the issue done.
      test_reinject_failed_commitment protocols ~kind ; *)