diff --git a/core/rtw_sta_mgt.c b/core/rtw_sta_mgt.c
index c2e27b9..23d6b72 100644
--- a/core/rtw_sta_mgt.c
+++ b/core/rtw_sta_mgt.c
@@ -388,7 +388,7 @@ void rtw_mfree_stainfo(struct sta_info *psta);
 void rtw_mfree_stainfo(struct sta_info *psta)
 {
 
-	if (&psta->lock != NULL)
+	if (&(psta->lock) != NULL)
 		_rtw_spinlock_free(&psta->lock);
 
 	_rtw_free_sta_xmit_priv_lock(&psta->sta_xmitpriv);
diff --git a/hal/hal_dm.c b/hal/hal_dm.c
index 83bf523..b42235a 100644
--- a/hal/hal_dm.c
+++ b/hal/hal_dm.c
@@ -639,7 +639,7 @@ void rtw_hal_turbo_edca(_adapter *adapter)
 		return;
 	}
 
-	if ((pregpriv->wifi_spec == 1)) { /* || (pmlmeinfo->HT_enable == 0)) */
+	if (pregpriv->wifi_spec == 1) { /* || (pmlmeinfo->HT_enable == 0)) */
 		precvpriv->is_any_non_be_pkts = _FALSE;
 		return;
 	}
diff --git a/hal/hal_mp.c b/hal/hal_mp.c
index 9817e53..8d7bd54 100644
--- a/hal/hal_mp.c
+++ b/hal/hal_mp.c
@@ -180,7 +180,7 @@ void hal_mpt_CCKTxPowerAdjust(PADAPTER Adapter, BOOLEAN bInCH14)
 	} else if (IS_HARDWARE_TYPE_8723D(Adapter)) {
 		/* 2.4G CCK TX DFIR */
 		/* 2016.01.20 Suggest from RS BB mingzhi*/
-		if ((u1Channel == 14)) {
+		if (u1Channel == 14) {
 			phy_set_bb_reg(Adapter, rCCK0_TxFilter2, bMaskDWord, 0x0000B81C);
 			phy_set_bb_reg(Adapter, rCCK0_DebugPort, bMaskDWord, 0x00000000);
 			phy_set_bb_reg(Adapter, 0xAAC, bMaskDWord, 0x00003667);
diff --git a/os_dep/linux/ioctl_mp.c b/os_dep/linux/ioctl_mp.c
index 0c49117..c8e2a67 100644
--- a/os_dep/linux/ioctl_mp.c
+++ b/os_dep/linux/ioctl_mp.c
@@ -3070,7 +3070,7 @@ int rtw_mp_link(struct net_device *dev,
 		/* tmp[0],[1],[2] */
 		/* txdata,00e04c871200........... */
 		if (strcmp(tmp[0], "txdata") == 0) {
-			if ((tmp[1] == NULL)) {
+			if (tmp[1] == NULL) {
 				err = -EINVAL;
 				goto exit;
 			}