diff --git a/MdePkg/Include/Protocol/Supplicant.h b/MdePkg/Include/Protocol/Supplicant.h
index 37e4c7ec77..9cd63f82d1 100644
--- a/MdePkg/Include/Protocol/Supplicant.h
+++ b/MdePkg/Include/Protocol/Supplicant.h
@@ -1,7 +1,7 @@
 /** @file
   This file defines the EFI Supplicant Protocol.
 
-  Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved.<BR>
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution. The full text of the license may be found at
@@ -152,6 +152,10 @@ typedef enum {
   // EFI_SUPPLICANT_GTK_LIST.
   //
   EfiSupplicant80211IGTK,
+  //
+  // 802.11 PMK. The corresponding Data is 32 bytes pairwise master key.
+  //
+  EfiSupplicant80211PMK,
   EfiSupplicantDataTypeMaximum
 } EFI_SUPPLICANT_DATA_TYPE;
 
diff --git a/MdePkg/Include/Protocol/WiFi2.h b/MdePkg/Include/Protocol/WiFi2.h
index fc4da5cf21..e370059b40 100644
--- a/MdePkg/Include/Protocol/WiFi2.h
+++ b/MdePkg/Include/Protocol/WiFi2.h
@@ -1,7 +1,7 @@
 /** @file
   This file defines the EFI Wireless MAC Connection II Protocol.
 
-  Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution. The full text of the license may be found at
@@ -202,7 +202,7 @@ typedef struct {
   // The NetworkDesc is a pointer to an array of EFI_80211_NETWORK_DESCRIPTION
   // instances. It is caller's responsibility to free this buffer.
   //
-  EFI_80211_NETWORK_DESCRIPTION             **NetworkDesc;
+  EFI_80211_NETWORK_DESCRIPTION             NetworkDesc[1];
 } EFI_80211_GET_NETWORKS_RESULT;
 
 ///