diff --git a/MdeModulePkg/Universal/Network/MnpDxe/MnpImpl.h b/MdeModulePkg/Universal/Network/MnpDxe/MnpImpl.h
index c66be6487b..51391afe26 100644
--- a/MdeModulePkg/Universal/Network/MnpDxe/MnpImpl.h
+++ b/MdeModulePkg/Universal/Network/MnpDxe/MnpImpl.h
@@ -27,7 +27,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #define MNP_INIT_NET_BUFFER_NUM       512
 #define MNP_NET_BUFFER_INCREASEMENT   64
 #define MNP_MAX_NET_BUFFER_NUM        65536
-#define MNP_TX_BUFFER_INCREASEMENT    64
+#define MNP_TX_BUFFER_INCREASEMENT    32    // Same as the recycling Q length for xmit_done in UNDI command.
 #define MNP_MAX_TX_BUFFER_NUM         65536
 
 #define MNP_MAX_RCVD_PACKET_QUE_SIZE  256