diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
index efb7aac757..f323b83c94 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcDhcp.c
@@ -196,7 +196,7 @@ PxeBcParseCachedDhcpPacket (
     ASSERT (Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] != NULL);
     Ptr8 =  (UINT8*)&Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE]->Data[0];
     Ptr8 += Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE]->Length;
-    Ptr8 =  '\0';
+    *Ptr8 =  '\0';
 
   } else if ((Options[PXEBC_DHCP4_TAG_INDEX_BOOTFILE] == NULL) &&
             (Offer->Dhcp4.Header.BootFileName[0] != 0)) {