diff --git a/build.gradle b/build.gradle
index 69bd4b127..b1c142e3a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -230,7 +230,7 @@ publishing {
             pom {
                 name = 'fisco-bcos'
                 description = 'fisco-bcos java-sdk'
-                url = 'http://www.fisco-bcos.org'
+                url = 'https://github.com/FISCO-BCOS/java-sdk'
 
                 licenses {
                     license {
diff --git a/src/main/java/org/fisco/bcos/sdk/v3/contract/auth/po/ProposalInfo.java b/src/main/java/org/fisco/bcos/sdk/v3/contract/auth/po/ProposalInfo.java
index 9440882b0..db99057ff 100644
--- a/src/main/java/org/fisco/bcos/sdk/v3/contract/auth/po/ProposalInfo.java
+++ b/src/main/java/org/fisco/bcos/sdk/v3/contract/auth/po/ProposalInfo.java
@@ -21,7 +21,8 @@ public class ProposalInfo extends DynamicStruct {
 
     public ProposalInfo() {
         super(
-                new Address(""),
+                Address.DEFAULT,
+                Address.DEFAULT,
                 new Uint8(0),
                 new Uint256(0),
                 new Uint8(0),
diff --git a/src/test/java/org/fisco/bcos/sdk/v3/test/contract/auth/ProposalInfoTest.java b/src/test/java/org/fisco/bcos/sdk/v3/test/contract/auth/ProposalInfoTest.java
new file mode 100644
index 000000000..656293d96
--- /dev/null
+++ b/src/test/java/org/fisco/bcos/sdk/v3/test/contract/auth/ProposalInfoTest.java
@@ -0,0 +1,21 @@
+package org.fisco.bcos.sdk.v3.test.contract.auth;
+
+import org.fisco.bcos.sdk.v3.codec.datatypes.Address;
+import org.fisco.bcos.sdk.v3.contract.auth.po.ProposalInfo;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class ProposalInfoTest {
+
+    @Test
+    public void testDefaultConstructor() {
+        ProposalInfo proposalInfo = new ProposalInfo();
+
+        Assert.assertEquals(7, proposalInfo.getValue().size());
+        Assert.assertEquals(
+                "(address,address,uint8,uint256,uint8,address[],address[])",
+                proposalInfo.getTypeAsString());
+        Assert.assertEquals(Address.DEFAULT, proposalInfo.getValue().get(0));
+        Assert.assertEquals(Address.DEFAULT, proposalInfo.getValue().get(1));
+    }
+}