diff --git a/core/rtw_mlme_ext.c b/core/rtw_mlme_ext.c
index 0a7a29e..ae2bd06 100755
--- a/core/rtw_mlme_ext.c
+++ b/core/rtw_mlme_ext.c
@@ -1400,7 +1400,7 @@ void mgt_dispatcher(_adapter *padapter, union recv_frame *precv_frame)
 			ptable->func = &OnAuth;
 		else
 			ptable->func = &OnAuthClient;
-	/* pass through */
+		__attribute__ ((fallthrough));/* FALL THRU */
 	case WIFI_ASSOCREQ:
 	case WIFI_REASSOCREQ:
 		_mgt_dispatcher(padapter, ptable, precv_frame);
diff --git a/hal/hal_intf.c b/hal/hal_intf.c
index 9fbad0d..3d440ea 100644
--- a/hal/hal_intf.c
+++ b/hal/hal_intf.c
@@ -827,8 +827,7 @@ s32 c2h_handler(_adapter *adapter, u8 id, u8 seq, u8 plen, u8 *payload)
 
 	case C2H_EXTEND:
 		sub_id = payload[0];
-		/* no handle, goto default */
-
+		__attribute__ ((fallthrough));/* FALL THRU */
 	default:
 		if (phydm_c2H_content_parsing(odm, id, plen, payload) != true)
 			ret = _FAIL;
diff --git a/os_dep/ioctl_cfg80211.c b/os_dep/ioctl_cfg80211.c
index 15fa429..3cd1182 100644
--- a/os_dep/ioctl_cfg80211.c
+++ b/os_dep/ioctl_cfg80211.c
@@ -1749,6 +1749,7 @@ static int cfg80211_rtw_change_iface(struct wiphy *wiphy,
 	#if defined(CONFIG_P2P) && ((LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37)) || defined(COMPAT_KERNEL_RELEASE))
 	case NL80211_IFTYPE_P2P_CLIENT:
 		is_p2p = true;
+		__attribute__ ((fallthrough));/* FALL THRU */
 	#endif
 	case NL80211_IFTYPE_STATION:
 		networkType = Ndis802_11Infrastructure;
@@ -1773,6 +1774,7 @@ static int cfg80211_rtw_change_iface(struct wiphy *wiphy,
 	#if defined(CONFIG_P2P) && ((LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37)) || defined(COMPAT_KERNEL_RELEASE))
 	case NL80211_IFTYPE_P2P_GO:
 		is_p2p = true;
+		__attribute__ ((fallthrough));/* FALL THRU */
 	#endif
 	case NL80211_IFTYPE_AP:
 		networkType = Ndis802_11APMode;