diff --git a/mt7615/mcu.h b/mt7615/mcu.h
index 3874f45d..411ebb56 100644
--- a/mt7615/mcu.h
+++ b/mt7615/mcu.h
@@ -362,30 +362,6 @@ enum {
 	BSS_INFO_MAX_NUM
 };
 
-#define MT7615_WTBL_UPDATE_MAX_SIZE	(sizeof(struct wtbl_req_hdr) +	\
-					 sizeof(struct wtbl_generic) +	\
-					 sizeof(struct wtbl_rx) +	\
-					 sizeof(struct wtbl_ht) +	\
-					 sizeof(struct wtbl_vht) +	\
-					 sizeof(struct wtbl_tx_ps) +	\
-					 sizeof(struct wtbl_hdr_trans) +\
-					 sizeof(struct wtbl_ba) +	\
-					 sizeof(struct wtbl_bf) +	\
-					 sizeof(struct wtbl_smps) +	\
-					 sizeof(struct wtbl_pn) +	\
-					 sizeof(struct wtbl_spe))
-
-#define MT7615_STA_UPDATE_MAX_SIZE	(sizeof(struct sta_req_hdr) +	\
-					 sizeof(struct sta_rec_basic) +	\
-					 sizeof(struct sta_rec_ht) +	\
-					 sizeof(struct sta_rec_vht) +	\
-					 sizeof(struct sta_rec_uapsd) + \
-					 sizeof(struct tlv) +	\
-					 MT7615_WTBL_UPDATE_MAX_SIZE)
-
-#define MT7615_WTBL_UPDATE_BA_SIZE	(sizeof(struct wtbl_req_hdr) +	\
-					 sizeof(struct wtbl_ba))
-
 enum {
 	CH_SWITCH_NORMAL = 0,
 	CH_SWITCH_SCAN = 3,
diff --git a/mt76_connac_mcu.c b/mt76_connac_mcu.c
index 6cbccfb0..e6ad6cbe 100644
--- a/mt76_connac_mcu.c
+++ b/mt76_connac_mcu.c
@@ -287,7 +287,7 @@ mt76_connac_mcu_alloc_wtbl_req(struct mt76_dev *dev, struct mt76_wcid *wcid,
 				     &hdr.wlan_idx_hi);
 	if (!nskb) {
 		nskb = mt76_mcu_msg_alloc(dev, NULL,
-					  MT76_CONNAC_WTBL_UPDATE_BA_SIZE);
+					  MT76_CONNAC_WTBL_UPDATE_MAX_SIZE);
 		if (!nskb)
 			return ERR_PTR(-ENOMEM);
 
diff --git a/mt76_connac_mcu.h b/mt76_connac_mcu.h
index c1e1df5f..9c26b906 100644
--- a/mt76_connac_mcu.h
+++ b/mt76_connac_mcu.h
@@ -304,9 +304,6 @@ struct wtbl_raw {
 					 sizeof(struct tlv) +		\
 					 MT76_CONNAC_WTBL_UPDATE_MAX_SIZE)
 
-#define MT76_CONNAC_WTBL_UPDATE_BA_SIZE	(sizeof(struct wtbl_req_hdr) +	\
-					 sizeof(struct wtbl_ba))
-
 enum {
 	STA_REC_BASIC,
 	STA_REC_RA,
diff --git a/mt7915/mcu.c b/mt7915/mcu.c
index 5a20d140..1df95551 100644
--- a/mt7915/mcu.c
+++ b/mt7915/mcu.c
@@ -592,7 +592,7 @@ mt7915_mcu_alloc_wtbl_req(struct mt7915_dev *dev, struct mt7915_sta *msta,
 
 	if (!nskb) {
 		nskb = mt76_mcu_msg_alloc(&dev->mt76, NULL,
-					  MT7915_WTBL_UPDATE_BA_SIZE);
+					  MT7915_WTBL_UPDATE_MAX_SIZE);
 		if (!nskb)
 			return ERR_PTR(-ENOMEM);
 
diff --git a/mt7915/mcu.h b/mt7915/mcu.h
index 2d584142..2a2f7bf2 100644
--- a/mt7915/mcu.h
+++ b/mt7915/mcu.h
@@ -1080,9 +1080,6 @@ enum {
 					 sizeof(struct tlv) +		\
 					 MT7915_WTBL_UPDATE_MAX_SIZE)
 
-#define MT7915_WTBL_UPDATE_BA_SIZE	(sizeof(struct wtbl_req_hdr) +	\
-					 sizeof(struct wtbl_ba))
-
 #define MT7915_BSS_UPDATE_MAX_SIZE	(sizeof(struct sta_req_hdr) +	\
 					 sizeof(struct bss_info_omac) +	\
 					 sizeof(struct bss_info_basic) +\