diff --git a/examples/bluetooth/nimble/ble_l2cap_coc/coc_blecent/main/main.c b/examples/bluetooth/nimble/ble_l2cap_coc/coc_blecent/main/main.c
index 714ea280812..380aac13cb8 100644
--- a/examples/bluetooth/nimble/ble_l2cap_coc/coc_blecent/main/main.c
+++ b/examples/bluetooth/nimble/ble_l2cap_coc/coc_blecent/main/main.c
@@ -59,7 +59,6 @@ blecent_l2cap_coc_send_data(struct ble_l2cap_chan *chan)
     } else {
         MODLOG_DFLT(INFO,"Data sending failed, rc = %d",rc);
     }
-    os_mbuf_free(sdu_rx_data);
 }
 
 /**