--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -713,6 +713,8 @@ int ath9k_hw_rxprocdesc(struct ath_hw *a
 			rs->rs_status |= ATH9K_RXERR_DECRYPT;
 		else if (ads.ds_rxstatus8 & AR_MichaelErr)
 			rs->rs_status |= ATH9K_RXERR_MIC;
+		else if (ads.ds_rxstatus8 & AR_KeyMiss)
+			rs->rs_status |= ATH9K_RXERR_DECRYPT;
 	}
 
 	return 0;
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -616,7 +616,8 @@ int ath9k_hw_process_rxdesc_edma(struct 
 			rxs->rs_status |= ATH9K_RXERR_DECRYPT;
 		} else if (rxsp->status11 & AR_MichaelErr) {
 			rxs->rs_status |= ATH9K_RXERR_MIC;
-		}
+		} else if (rxsp->status11 & AR_KeyMiss)
+			rxs->rs_status |= ATH9K_RXERR_DECRYPT;
 	}
 
 	return 0;