diff --git a/src/ethUstream.c b/src/ethUstream.c
index 3737dc2..428adb5 100644
--- a/src/ethUstream.c
+++ b/src/ethUstream.c
@@ -103,26 +103,6 @@ static void processAccessList(txContext_t *context) {
     }
 }
 
-static void processType(txContext_t *context) {
-    if (context->currentFieldIsList) {
-        PRINTF("Invalid type for RLP_TYPE\n");
-        THROW(EXCEPTION);
-    }
-    if (context->currentFieldLength > MAX_INT256) {
-        PRINTF("Invalid length for RLP_TYPE\n");
-        THROW(EXCEPTION);
-    }
-    if (context->currentFieldPos < context->currentFieldLength) {
-        uint32_t copySize =
-            MIN(context->commandLength, context->currentFieldLength - context->currentFieldPos);
-        copyTxData(context, NULL, copySize);
-    }
-    if (context->currentFieldPos == context->currentFieldLength) {
-        context->currentField++;
-        context->processingField = false;
-    }
-}
-
 static void processChainID(txContext_t *context) {
     if (context->currentFieldIsList) {
         PRINTF("Invalid type for RLP_CHAINID\n");
@@ -321,14 +301,6 @@ static bool processEIP1559Tx(txContext_t *context) {
     switch (context->currentField) {
         case EIP1559_RLP_CONTENT: {
             processContent(context);
-            if ((context->processingFlags & TX_FLAG_TYPE) == 0) {
-                context->currentField++;
-            }
-            break;
-        }
-        // This gets hit only by Wanchain
-        case EIP1559_RLP_TYPE: {
-            processType(context);
             break;
         }
         case EIP1559_RLP_CHAINID: {
@@ -377,13 +349,6 @@ static bool processEIP2930Tx(txContext_t *context) {
     switch (context->currentField) {
         case EIP2930_RLP_CONTENT:
             processContent(context);
-            if ((context->processingFlags & TX_FLAG_TYPE) == 0) {
-                context->currentField++;
-            }
-            break;
-        // This gets hit only by Wanchain
-        case EIP2930_RLP_TYPE:
-            processType(context);
             break;
         case EIP2930_RLP_CHAINID:
             processChainID(context);
@@ -420,13 +385,6 @@ static bool processLegacyTx(txContext_t *context) {
     switch (context->currentField) {
         case LEGACY_RLP_CONTENT:
             processContent(context);
-            if ((context->processingFlags & TX_FLAG_TYPE) == 0) {
-                context->currentField++;
-            }
-            break;
-        // This gets hit only by Wanchain
-        case LEGACY_RLP_TYPE:
-            processType(context);
             break;
         case LEGACY_RLP_NONCE:
             processNonce(context);
@@ -592,16 +550,12 @@ static parserStatus_e processTxInternal(txContext_t *context) {
     PRINTF("end of here\n");
 }
 
-parserStatus_e processTx(txContext_t *context,
-                         const uint8_t *buffer,
-                         uint32_t length,
-                         uint32_t processingFlags) {
+parserStatus_e processTx(txContext_t *context, const uint8_t *buffer, uint32_t length) {
     parserStatus_e result;
     BEGIN_TRY {
         TRY {
             context->workBuffer = buffer;
             context->commandLength = length;
-            context->processingFlags = processingFlags;
             result = processTxInternal(context);
             PRINTF("result: %d\n", result);
         }
diff --git a/src/ethUstream.h b/src/ethUstream.h
index d14a42a..b27e490 100644
--- a/src/ethUstream.h
+++ b/src/ethUstream.h
@@ -36,8 +36,6 @@ typedef enum customStatus_e {
 
 typedef customStatus_e (*ustreamProcess_t)(struct txContext_t *context);
 
-#define TX_FLAG_TYPE 0x01
-
 // First variant of every Tx enum.
 #define RLP_NONE 0
 
@@ -49,7 +47,6 @@ typedef customStatus_e (*ustreamProcess_t)(struct txContext_t *context);
 typedef enum rlpLegacyTxField_e {
     LEGACY_RLP_NONE = RLP_NONE,
     LEGACY_RLP_CONTENT,
-    LEGACY_RLP_TYPE,  // For wanchain
     LEGACY_RLP_NONCE,
     LEGACY_RLP_GASPRICE,
     LEGACY_RLP_STARTGAS,
@@ -65,7 +62,6 @@ typedef enum rlpLegacyTxField_e {
 typedef enum rlpEIP2930TxField_e {
     EIP2930_RLP_NONE = RLP_NONE,
     EIP2930_RLP_CONTENT,
-    EIP2930_RLP_TYPE,  // For wanchain
     EIP2930_RLP_CHAINID,
     EIP2930_RLP_NONCE,
     EIP2930_RLP_GASPRICE,
@@ -80,7 +76,6 @@ typedef enum rlpEIP2930TxField_e {
 typedef enum rlpEIP1559TxField_e {
     EIP1559_RLP_NONE = RLP_NONE,
     EIP1559_RLP_CONTENT,
-    EIP1559_RLP_TYPE,  // For wanchain
     EIP1559_RLP_CHAINID,
     EIP1559_RLP_NONCE,
     EIP1559_RLP_MAX_PRIORITY_FEE_PER_GAS,
@@ -125,7 +120,6 @@ typedef struct txContext_t {
     uint32_t rlpBufferPos;
     const uint8_t *workBuffer;
     uint32_t commandLength;
-    uint32_t processingFlags;
     ustreamProcess_t customProcessor;
     txContent_t *content;
     void *extra;
@@ -137,10 +131,7 @@ void initTx(txContext_t *context,
             txContent_t *content,
             ustreamProcess_t customProcessor,
             void *extra);
-parserStatus_e processTx(txContext_t *context,
-                         const uint8_t *buffer,
-                         uint32_t length,
-                         uint32_t processingFlags);
+parserStatus_e processTx(txContext_t *context, const uint8_t *buffer, uint32_t length);
 parserStatus_e continueTx(txContext_t *context);
 void copyTxData(txContext_t *context, uint8_t *out, uint32_t length);
 uint8_t readTxByte(txContext_t *context);
diff --git a/src/network.c b/src/network.c
index 608ceb4..660e58e 100644
--- a/src/network.c
+++ b/src/network.c
@@ -51,6 +51,7 @@ static const network_info_t NETWORK_MAPPING[] = {
     {.chain_id = 336, .name = "Shiden", .ticker = "SDN"},
     {.chain_id = 369, .name = "PulseChain", .ticker = "PLS"},
     {.chain_id = 592, .name = "Astar", .ticker = "ASTR"},
+    {.chain_id = 888, .name = "Wanchain", .ticker = "WAN"},
     {.chain_id = 1030, .name = "Conflux", .ticker = "CFX"},
     {.chain_id = 1088, .name = "Metis Andromeda", .ticker = "METIS"},
     {.chain_id = 1101, .name = "Polygon zkEVM", .ticker = "ETH"},
diff --git a/src_features/signTx/cmd_signTx.c b/src_features/signTx/cmd_signTx.c
index 4da3a76..99ac51f 100644
--- a/src_features/signTx/cmd_signTx.c
+++ b/src_features/signTx/cmd_signTx.c
@@ -69,10 +69,7 @@ void handleSign(uint8_t p1,
         PRINTF("Parser not initialized\n");
         THROW(0x6985);
     }
-    txResult = processTx(&txContext,
-                         workBuffer,
-                         dataLength,
-                         (chainConfig->chainId == 888 ? TX_FLAG_TYPE : 0));  // Wanchain exception
+    txResult = processTx(&txContext, workBuffer, dataLength);
     switch (txResult) {
         case USTREAM_SUSPENDED:
             break;