diff --git a/src/main/res/xml/pref_all.xml b/src/main/res/xml/pref_all.xml
index 82412e04..2390e8e3 100644
--- a/src/main/res/xml/pref_all.xml
+++ b/src/main/res/xml/pref_all.xml
@@ -25,13 +25,13 @@
         <com.github.shadowsocks.preferences.NumberPickerPreference
                 app:min="1"
                 app:max="65535"
-                android:key="remotePort"
+                android:key="remotePortNum"
                 app:summary="@string/remote_port_summary"
                 android:title="@string/remote_port"/>
         <com.github.shadowsocks.preferences.NumberPickerPreference
                 app:min="1025"
                 app:max="65535"
-                android:key="port"
+                android:key="localPortNum"
                 app:summary="@string/port_summary"
                 android:title="@string/port"/>
         <com.github.shadowsocks.preferences.PasswordEditTextPreference
diff --git a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
index 6f27187d..50915944 100644
--- a/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
+++ b/src/main/scala/com/github/shadowsocks/Shadowsocks.scala
@@ -166,6 +166,20 @@ class Shadowsocks
     if (!ShadowsocksApplication.settings.getBoolean(ShadowsocksApplication.getVersionName, false)) {
       ShadowsocksApplication.settings.edit.putBoolean(ShadowsocksApplication.getVersionName, true).apply()
       recovery()
+
+      // Workaround that convert port(String) to port(Int)
+      val oldLocalPort = ShadowsocksApplication.settings.getString("port", "-1")
+      val oldRemotePort = ShadowsocksApplication.settings.getString("remotePort", "-1")
+      try {
+        if (oldLocalPort != "-1") {
+          ShadowsocksApplication.settings.edit.putInt(Key.localPort, oldLocalPort.toInt).commit()
+        }
+        if (oldRemotePort != "-1") {
+          ShadowsocksApplication.settings.edit.putInt(Key.remotePort, oldRemotePort.toInt).commit()
+        }
+      } catch {
+        case ex: Exception => // Ignore
+      }
     }
   }
 
diff --git a/src/main/scala/com/github/shadowsocks/database/DBHelper.scala b/src/main/scala/com/github/shadowsocks/database/DBHelper.scala
index d1aeeca9..ae685307 100644
--- a/src/main/scala/com/github/shadowsocks/database/DBHelper.scala
+++ b/src/main/scala/com/github/shadowsocks/database/DBHelper.scala
@@ -81,19 +81,22 @@ class DBHelper(val context: Context)
         profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN ipv6 SMALLINT;")
       }
       if (oldVersion < 12) {
+        profileDao.executeRawNoArgs("BEGIN TRANSACTION;")
         profileDao.executeRawNoArgs("ALTER TABLE `profile` RENAME TO `tmp`;")
-        onCreate(database, connectionSource)
+        TableUtils.createTable(connectionSource, classOf[Profile])
         profileDao.executeRawNoArgs(
           "INSERT INTO `profile`(id, name, host, localPort, remotePort, password, method, route, proxyApps, bypass," +
             " udpdns, auth, ipv6, individual) " +
           "SELECT id, name, host, localPort, remotePort, password, method, route, 1 - global, bypass, udpdns, auth," +
           " ipv6, individual FROM `tmp`;")
         profileDao.executeRawNoArgs("DROP TABLE `tmp`;")
+        profileDao.executeRawNoArgs("COMMIT;")
+        return
       }
       if (oldVersion < 13) {
         profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN tx LONG;")
         profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN rx LONG;")
-        profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN date DATE;")
+        profileDao.executeRawNoArgs("ALTER TABLE `profile` ADD COLUMN date VARCHAR;")
       }
     }
   }
diff --git a/src/main/scala/com/github/shadowsocks/utils/Constants.scala b/src/main/scala/com/github/shadowsocks/utils/Constants.scala
index c207e08d..cfc405c9 100644
--- a/src/main/scala/com/github/shadowsocks/utils/Constants.scala
+++ b/src/main/scala/com/github/shadowsocks/utils/Constants.scala
@@ -82,8 +82,8 @@ object Key {
   val proxy = "proxy"
   val sitekey = "sitekey"
   val encMethod = "encMethod"
-  val remotePort = "remotePort"
-  val localPort = "port"
+  val remotePort = "remotePortNum"
+  val localPort = "localPortNum"
 }
 
 object Scheme {