diff --git a/codec-socks/src/main/java/io/netty/handler/codec/socks/SocksCmdResponse.java b/codec-socks/src/main/java/io/netty/handler/codec/socks/SocksCmdResponse.java
index b38db62121..c918c3182a 100644
--- a/codec-socks/src/main/java/io/netty/handler/codec/socks/SocksCmdResponse.java
+++ b/codec-socks/src/main/java/io/netty/handler/codec/socks/SocksCmdResponse.java
@@ -90,8 +90,8 @@ public final class SocksCmdResponse extends SocksResponse {
             }
             host = IDN.toASCII(host);
         }
-        if (port <= 0 && port >= 65536) {
-            throw new IllegalArgumentException(port + " is not in bounds 0 < x < 65536");
+        if (port < 0 || port > 65535) {
+            throw new IllegalArgumentException(port + " is not in bounds 0 <= x <= 65535");
         }
         this.cmdStatus = cmdStatus;
         this.addressType = addressType;