diff --git a/NetworkPkg/HttpBootDxe/HttpBootClient.h b/NetworkPkg/HttpBootDxe/HttpBootClient.h
index 2dfafab936..06b91098fc 100644
--- a/NetworkPkg/HttpBootDxe/HttpBootClient.h
+++ b/NetworkPkg/HttpBootDxe/HttpBootClient.h
@@ -16,7 +16,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #define __EFI_HTTP_BOOT_HTTP_H__
 
 #define HTTP_BOOT_REQUEST_TIMEOUT            5000      // 5 seconds in uints of millisecond.
-#define HTTP_BOOT_BLOCK_SIZE                 1024
+#define HTTP_BOOT_BLOCK_SIZE                 1500
 
 #define HTTP_FIELD_NAME_USER_AGENT           "User-Agent"
 #define HTTP_FIELD_NAME_HOST                 "Host"