diff --git a/cl/beacon/handler/states.go b/cl/beacon/handler/states.go
index c4436429a0a..037852fd7c1 100644
--- a/cl/beacon/handler/states.go
+++ b/cl/beacon/handler/states.go
@@ -205,9 +205,9 @@ func (a *ApiHandler) getFullState(w http.ResponseWriter, r *http.Request) (*beac
 }
 
 type finalityCheckpointsResponse struct {
-	FinalizedCheckpoint         solid.Checkpoint `json:"finalized_checkpoint"`
-	CurrentJustifiedCheckpoint  solid.Checkpoint `json:"current_justified_checkpoint"`
-	PreviousJustifiedCheckpoint solid.Checkpoint `json:"previous_justified_checkpoint"`
+	FinalizedCheckpoint         solid.Checkpoint `json:"finalized"`
+	CurrentJustifiedCheckpoint  solid.Checkpoint `json:"current_justified"`
+	PreviousJustifiedCheckpoint solid.Checkpoint `json:"previous_justified"`
 }
 
 func (a *ApiHandler) getFinalityCheckpoints(w http.ResponseWriter, r *http.Request) (*beaconhttp.BeaconResponse, error) {
diff --git a/cl/beacon/handler/states_test.go b/cl/beacon/handler/states_test.go
index 73fb70380a9..58bf8657312 100644
--- a/cl/beacon/handler/states_test.go
+++ b/cl/beacon/handler/states_test.go
@@ -426,7 +426,7 @@ func TestGetStateFinalityCheckpoints(t *testing.T) {
 			code:    http.StatusOK,
 		},
 	}
-	expected := `{"data":{"finalized_checkpoint":{"epoch":"1","root":"0xde46b0f2ed5e72f0cec20246403b14c963ec995d7c2825f3532b0460c09d5693"},"current_justified_checkpoint":{"epoch":"3","root":"0xa6e47f164b1a3ca30ea3b2144bd14711de442f51e5b634750a12a1734e24c987"},"previous_justified_checkpoint":{"epoch":"2","root":"0x4c3ee7969e485696669498a88c17f70e6999c40603e2f4338869004392069063"}},"execution_optimistic":false,"finalized":false,"version":"bellatrix"}` + "\n"
+	expected := `{"data":{"finalized":{"epoch":"1","root":"0xde46b0f2ed5e72f0cec20246403b14c963ec995d7c2825f3532b0460c09d5693"},"current_justified":{"epoch":"3","root":"0xa6e47f164b1a3ca30ea3b2144bd14711de442f51e5b634750a12a1734e24c987"},"previous_justified":{"epoch":"2","root":"0x4c3ee7969e485696669498a88c17f70e6999c40603e2f4338869004392069063"}},"execution_optimistic":false,"finalized":false,"version":"bellatrix"}` + "\n"
 	for _, c := range cases {
 		t.Run(c.blockID, func(t *testing.T) {
 			server := httptest.NewServer(handler.mux)
diff --git a/cl/beacon/handler/test_data/states_1.yaml b/cl/beacon/handler/test_data/states_1.yaml
index f5e63003f7a..8b1e1866a8c 100644
--- a/cl/beacon/handler/test_data/states_1.yaml
+++ b/cl/beacon/handler/test_data/states_1.yaml
@@ -1,2 +1,2 @@
-finality_checkpoint: {"data":{"finalized_checkpoint":{"epoch":"1","root":"0xde46b0f2ed5e72f0cec20246403b14c963ec995d7c2825f3532b0460c09d5693"},"current_justified_checkpoint":{"epoch":"3","root":"0xa6e47f164b1a3ca30ea3b2144bd14711de442f51e5b634750a12a1734e24c987"},"previous_justified_checkpoint":{"epoch":"2","root":"0x4c3ee7969e485696669498a88c17f70e6999c40603e2f4338869004392069063"}},"finalized":false,"version":2,"execution_optimistic":false}
+finality_checkpoint: {"data":{"finalized":{"epoch":"1","root":"0xde46b0f2ed5e72f0cec20246403b14c963ec995d7c2825f3532b0460c09d5693"},"current_justified":{"epoch":"3","root":"0xa6e47f164b1a3ca30ea3b2144bd14711de442f51e5b634750a12a1734e24c987"},"previous_justified":{"epoch":"2","root":"0x4c3ee7969e485696669498a88c17f70e6999c40603e2f4338869004392069063"}},"finalized":false,"version":2,"execution_optimistic":false}
 randao: {"data":{"randao":"0xdeec617717272914bfd73e02ca1da113a83cf4cf33cd4939486509e2da4ccf4e"},"finalized":false,"execution_optimistic":false}