diff --git a/nimble/host/src/ble_att.c b/nimble/host/src/ble_att.c
index 4a867639c4..4a03f05283 100644
--- a/nimble/host/src/ble_att.c
+++ b/nimble/host/src/ble_att.c
@@ -639,6 +639,7 @@ bool
 ble_eatt_supported_req(uint8_t opcode)
 {
     switch (opcode) {
+    case BLE_ATT_OP_MTU_REQ:
     case BLE_ATT_OP_WRITE_CMD:
     case BLE_ATT_OP_FIND_INFO_REQ:
     case BLE_ATT_OP_FIND_TYPE_VALUE_REQ:
diff --git a/nimble/host/src/ble_eatt.c b/nimble/host/src/ble_eatt.c
index 3ec9bd3b8e..5d66e7811d 100644
--- a/nimble/host/src/ble_eatt.c
+++ b/nimble/host/src/ble_eatt.c
@@ -277,8 +277,7 @@ ble_eatt_l2cap_event_fn(struct ble_l2cap_event *event, void *arg)
              *  • The Signed Write Without Response sub-procedure shall only be
              *  supported on the LE Fixed Channel Unenhanced ATT bearer.
              */
-            ble_l2cap_disconnect(eatt->chan);
-            return BLE_HS_EREJECT;
+            return BLE_HS_ENOTSUP;
         }
 
         assert (!ble_gap_conn_find(event->receive.conn_handle, &desc));