diff --git a/drivers/staging/rtl8192e/rtllib.h b/drivers/staging/rtl8192e/rtllib.h
index 7a1a68317a49..0eb987e999c5 100644
--- a/drivers/staging/rtl8192e/rtllib.h
+++ b/drivers/staging/rtl8192e/rtllib.h
@@ -480,7 +480,7 @@ struct rtllib_rx_stats {
 	bool  bFirstMPDU;
 	bool  contain_htc;
 	u32   RxPWDBAll;
-	u8    RxMIMOSignalStrength[4];
+	u8    RxMIMOSignalStrength[2];
 	s8    RxMIMOSignalQuality[2];
 	bool  bPacketMatchBSSID;
 	bool  bIsCCK;