diff --git a/components/bt/bluedroid/stack/l2cap/l2c_link.c b/components/bt/bluedroid/stack/l2cap/l2c_link.c
index 41a437c989..6d4155e869 100644
--- a/components/bt/bluedroid/stack/l2cap/l2c_link.c
+++ b/components/bt/bluedroid/stack/l2cap/l2c_link.c
@@ -1100,10 +1100,10 @@ void l2c_link_check_send_pkts (tL2C_LCB *p_lcb, tL2C_CCB *p_ccb, BT_HDR *p_buf)
 #if (BLE_INCLUDED == TRUE)
         while ( ((l2cb.controller_xmit_window != 0 && (p_lcb->transport == BT_TRANSPORT_BR_EDR)) ||
                  (l2cb.controller_le_xmit_window != 0 && (p_lcb->transport == BT_TRANSPORT_LE)))
-                && (p_lcb->sent_not_acked <= p_lcb->link_xmit_quota))
+                && (p_lcb->sent_not_acked < p_lcb->link_xmit_quota))
 #else
         while ( (l2cb.controller_xmit_window != 0)
-                && (p_lcb->sent_not_acked <= p_lcb->link_xmit_quota))
+                && (p_lcb->sent_not_acked < p_lcb->link_xmit_quota))
 #endif
         {
             if (list_is_empty(p_lcb->link_xmit_data_q)) {
@@ -1122,7 +1122,7 @@ void l2c_link_check_send_pkts (tL2C_LCB *p_lcb, tL2C_CCB *p_ccb, BT_HDR *p_buf)
 #if (BLE_INCLUDED == TRUE)
             while ( ((l2cb.controller_xmit_window != 0 && (p_lcb->transport == BT_TRANSPORT_BR_EDR)) ||
                      (l2cb.controller_le_xmit_window != 0 && (p_lcb->transport == BT_TRANSPORT_LE)))
-                    && (p_lcb->sent_not_acked <= p_lcb->link_xmit_quota))
+                    && (p_lcb->sent_not_acked < p_lcb->link_xmit_quota))
 #else
             while ((l2cb.controller_xmit_window != 0) && (p_lcb->sent_not_acked < p_lcb->link_xmit_quota))
 #endif