diff --git a/Netch/Servers/Shadowsocks/SSController.cs b/Netch/Servers/Shadowsocks/SSController.cs
index ff0337b9..9ade86bf 100644
--- a/Netch/Servers/Shadowsocks/SSController.cs
+++ b/Netch/Servers/Shadowsocks/SSController.cs
@@ -27,9 +27,9 @@ namespace Netch.Servers.Shadowsocks
             var command = new SSParameter
             {
                 s = server.AutoResolveHostname(),
-                p = server.Port.ToString(),
+                p = server.Port,
                 b = this.LocalAddress(),
-                l = this.Socks5LocalPort().ToString(),
+                l = this.Socks5LocalPort(),
                 m = server.EncryptMethod,
                 k = server.Password,
                 u = true,
@@ -48,11 +48,11 @@ namespace Netch.Servers.Shadowsocks
         {
             public string? s { get; set; }
 
-            public string? p { get; set; }
+            public ushort? p { get; set; }
 
             public string? b { get; set; }
 
-            public string? l { get; set; }
+            public ushort? l { get; set; }
 
             public string? m { get; set; }
 
diff --git a/Netch/Servers/ShadowsocksR/SSRController.cs b/Netch/Servers/ShadowsocksR/SSRController.cs
index ace52dff..97772ffa 100644
--- a/Netch/Servers/ShadowsocksR/SSRController.cs
+++ b/Netch/Servers/ShadowsocksR/SSRController.cs
@@ -27,7 +27,7 @@ namespace Netch.Servers.ShadowsocksR
             var command = new SSRParameter
             {
                 s = server.AutoResolveHostname(),
-                p = server.Port.ToString(),
+                p = server.Port,
                 k = server.Password,
                 m = server.EncryptMethod,
                 t = "120",
@@ -36,7 +36,7 @@ namespace Netch.Servers.ShadowsocksR
                 o = server.OBFS,
                 g = server.OBFSParam,
                 b = this.LocalAddress(),
-                l = this.Socks5LocalPort().ToString(),
+                l = this.Socks5LocalPort(),
                 u = true
             };
 
@@ -51,7 +51,7 @@ namespace Netch.Servers.ShadowsocksR
         {
             public string? s { get; set; }
 
-            public string? p { get; set; }
+            public ushort? p { get; set; }
 
             [Quote]
             public string? k { get; set; }
@@ -74,7 +74,7 @@ namespace Netch.Servers.ShadowsocksR
 
             public string? b { get; set; }
 
-            public string? l { get; set; }
+            public ushort? l { get; set; }
 
             public bool u { get; set; }
 
diff --git a/UnitTest/ParameterTest.cs b/UnitTest/ParameterTest.cs
index ef333f29..bdf8c42d 100644
--- a/UnitTest/ParameterTest.cs
+++ b/UnitTest/ParameterTest.cs
@@ -74,6 +74,13 @@ namespace UnitTest
             public string? udp { get; set; } = null;
         }
 
+        private class Number : ParameterBase
+        {
+            public ushort a { get; set; } = 1;
+
+            public int b { get; set; } = 1;
+        }
+
         [TestMethod]
         public void Test()
         {
@@ -85,6 +92,7 @@ namespace UnitTest
             Assert.AreEqual(new FlagAndOptional().ToString(), "--a");
             Assert.ThrowsException<RequiredArgumentValueInvalidException>(() => { _ = new RequiredEmpty().ToString(); });
             Assert.ThrowsException<RequiredArgumentValueInvalidException>(() => { _ = new RequiredNull().ToString(); });
+            Assert.AreEqual(new Number().ToString(), "--a 1 --b 1");
         }
     }
 }
\ No newline at end of file