diff --git a/mt7996/mcu.h b/mt7996/mcu.h
index a2700151..d3ac6ac0 100644
--- a/mt7996/mcu.h
+++ b/mt7996/mcu.h
@@ -320,7 +320,7 @@ struct bss_rate_tlv {
 	u8 short_preamble;
 	u8 bc_fixed_rate;
 	u8 mc_fixed_rate;
-	u8 __rsv2[1];
+	u8 __rsv2[9];
 } __packed;
 
 struct bss_ra_tlv {