diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c
index 79c9a67f9e..a20fdb7a84 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.c
@@ -42,7 +42,7 @@ PxeBcCommonNotify (
   @param  SubnetMask Pointer to the subnetmask of the station ip address.
   @param  Gateway    Pointer to the gateway ip address.
   @param  SrcPort    Pointer to the srouce port of the station.
-  @param  TTL        The time to live field of the IP header. 
+  @param  Ttl        The time to live field of the IP header. 
   @param  ToS        The type of service field of the IP header.
 
   @retval EFI_SUCCESS           The configuration settings were set, changed, or reset successfully.
@@ -68,7 +68,7 @@ PxeBcConfigureUdpWriteInstance (
   IN EFI_IPv4_ADDRESS   *SubnetMask,
   IN EFI_IPv4_ADDRESS   *Gateway,
   IN OUT UINT16         *SrcPort,
-  IN     UINT8          TTL,
+  IN     UINT8          Ttl,
   IN     UINT8          ToS
   )
 {
diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.h b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.h
index 1082b3aa2e..16ac05ec82 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.h
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcSupport.h
@@ -38,7 +38,7 @@ PxeBcCommonNotify (
   @param  SubnetMask Pointer to the subnetmask of the station ip address.
   @param  Gateway    Pointer to the gateway ip address.
   @param  SrcPort    Pointer to the srouce port of the station.
-  @param  TTL        The time to live field of the IP header. 
+  @param  Ttl        The time to live field of the IP header. 
   @param  ToS        The type of service field of the IP header.
 
   @retval EFI_SUCCESS           The configuration settings were set, changed, or reset successfully.
@@ -64,7 +64,7 @@ PxeBcConfigureUdpWriteInstance (
   IN EFI_IPv4_ADDRESS   *SubnetMask,
   IN EFI_IPv4_ADDRESS   *Gateway,
   IN OUT UINT16         *SrcPort,
-  IN     UINT8          TTL,
+  IN     UINT8          Ttl,
   IN     UINT8          ToS
   );
 /**