diff --git a/mt7915/mt7915.h b/mt7915/mt7915.h
index 43dc27c5..e5f89161 100644
--- a/mt7915/mt7915.h
+++ b/mt7915/mt7915.h
@@ -319,7 +319,7 @@ struct mt7915_dev {
 	void *cal;
 
 	struct {
-		u8 table_mask;
+		u16 table_mask;
 		u8 n_agrt;
 	} twt;