diff --git a/package.json b/package.json
index d2ee8e5..919c325 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "protocol2-js",
-  "version": "0.4.5",
+  "version": "0.4.7",
   "description": "loopring protocol simulator core lib",
   "main": "build/index.js",
   "types": "build/index.d.ts",
diff --git a/src/multihash.ts b/src/multihash.ts
index 5c4c026..a22ffa3 100644
--- a/src/multihash.ts
+++ b/src/multihash.ts
@@ -36,7 +36,7 @@ export class MultiHashUtil {
     sig.addNumber(algorithm, 1);
     switch (+algorithm) {
       case SignAlgorithm.Ethereum:
-        await this.signEthereumAsync(sig, hash, address);
+        await this.signEIP712Async(sig, hash, privateKey);
         return sig.getData();
       case SignAlgorithm.EIP712:
         await this.signEIP712Async(sig, hash, privateKey);
diff --git a/src/rings_generator.ts b/src/rings_generator.ts
index db47db3..3d39f9e 100644
--- a/src/rings_generator.ts
+++ b/src/rings_generator.ts
@@ -229,8 +229,16 @@ export class RingsGenerator {
     this.insertOffset(param, param.data.addNumber(order.amountS, 32, false));
     this.insertOffset(param, param.data.addNumber(order.amountB, 32, false));
     this.insertOffset(param, param.data.addNumber(order.validSince, 4, false));
-    param.tables.addNumber(order.tokenSpendableS.index, 2);
-    param.tables.addNumber(order.tokenSpendableFee.index, 2);
+    if (order.tokenSpendableS.index) {
+      param.tables.addNumber(order.tokenSpendableS.index, 2);
+    }  else {
+      param.tables.addNumber(0, 2);
+    }
+    if (order.tokenSpendableFee.index) {
+      param.tables.addNumber(order.tokenSpendableFee.index, 2);
+    } else {
+      param.tables.addNumber(0, 2);
+    }
 
     if (order.dualAuthAddr) {
       this.insertOffset(param, param.data.addAddress(order.dualAuthAddr, 20, false));