diff --git a/NetworkPkg/TcpDxe/TcpOption.c b/NetworkPkg/TcpDxe/TcpOption.c
index bacce1070d..bd1c2b9c27 100644
--- a/NetworkPkg/TcpDxe/TcpOption.c
+++ b/NetworkPkg/TcpDxe/TcpOption.c
@@ -1,7 +1,7 @@
 /** @file
   Routines to process TCP option.
 
-  Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2009 - 2018, 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
@@ -342,33 +342,3 @@ TcpParseOption (
 
   return 0;
 }
-
-/**
-  Check the segment against PAWS.
-
-  @param[in]  Tcb     Pointer to the TCP_CB of this TCP instance.
-  @param[in]  TSVal   The timestamp value.
-
-  @retval     1       The segment passed the PAWS check.
-  @retval     0       The segment failed to pass the PAWS check.
-
-**/
-UINT32
-TcpPawsOK (
-  IN TCP_CB *Tcb,
-  IN UINT32 TSVal
-  )
-{
-  //
-  // PAWS as defined in RFC1323, buggy...
-  //
-  if (TCP_TIME_LT (TSVal, Tcb->TsRecent) &&
-      TCP_TIME_LT (Tcb->TsRecentAge + TCP_PAWS_24DAY, mTcpTick)
-      ) {
-
-    return 0;
-
-  }
-
-  return 1;
-}
diff --git a/NetworkPkg/TcpDxe/TcpOption.h b/NetworkPkg/TcpDxe/TcpOption.h
index 0ccadb9536..e50fb9b129 100644
--- a/NetworkPkg/TcpDxe/TcpOption.h
+++ b/NetworkPkg/TcpDxe/TcpOption.h
@@ -1,7 +1,7 @@
 /** @file
   Tcp option's routine header file.
 
-  Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2009 - 2018, 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
@@ -126,20 +126,4 @@ TcpParseOption (
   IN OUT TCP_OPTION *Option
   );
 
-/**
-  Check the segment against PAWS.
-
-  @param[in]  Tcb     Pointer to the TCP_CB of this TCP instance.
-  @param[in]  TSVal   The timestamp value.
-
-  @retval     1       The segment passed the PAWS check.
-  @retval     0       The segment failed to pass the PAWS check.
-
-**/
-UINT32
-TcpPawsOK (
-  IN TCP_CB *Tcb,
-  IN UINT32 TSVal
-  );
-
 #endif