diff --git a/src/Microsoft.PowerShell.ConsoleHost/host/msh/CommandLineParameterParser.cs b/src/Microsoft.PowerShell.ConsoleHost/host/msh/CommandLineParameterParser.cs
index b297c248a1d..8321cb8b810 100644
--- a/src/Microsoft.PowerShell.ConsoleHost/host/msh/CommandLineParameterParser.cs
+++ b/src/Microsoft.PowerShell.ConsoleHost/host/msh/CommandLineParameterParser.cs
@@ -182,9 +182,7 @@ internal class CommandLineParameterParser
             "noninteractive",
             "inputformat",
             "outputformat",
-#if !UNIX
             "windowstyle",
-#endif
             "encodedcommand",
             "configurationname",
             "file",
@@ -588,9 +586,13 @@ private void ParseHelper(string[] args)
                         break;
                     }
                 }
-#if !UNIX
                 else if (MatchSwitch(switchKey, "windowstyle", "w"))
                 {
+#if UNIX
+                    WriteCommandLineError(
+                        CommandLineParameterParserStrings.WindowStyleArgumentNotImplemented);
+                    break;
+#else
                     ++i;
                     if (i >= args.Length)
                     {
@@ -611,8 +613,8 @@ private void ParseHelper(string[] args)
                             string.Format(CultureInfo.CurrentCulture, CommandLineParameterParserStrings.InvalidWindowStyleArgument, args[i], e.Message));
                         break;
                     }
-                }
 #endif
+                }
                 else if (MatchSwitch(switchKey, "file", "f"))
                 {
                     if (!ParseFile(args, ref i, noexitSeen))
diff --git a/src/Microsoft.PowerShell.ConsoleHost/resources/CommandLineParameterParserStrings.resx b/src/Microsoft.PowerShell.ConsoleHost/resources/CommandLineParameterParserStrings.resx
index 7ad30993383..93b299bc817 100644
--- a/src/Microsoft.PowerShell.ConsoleHost/resources/CommandLineParameterParserStrings.resx
+++ b/src/Microsoft.PowerShell.ConsoleHost/resources/CommandLineParameterParserStrings.resx
@@ -189,4 +189,7 @@
   <data name="InvalidArgument" xml:space="preserve">
     <value>Invalid argument '{0}', did you mean:</value>
   </data>
+  <data name="WindowStyleArgumentNotImplemented" xml:space="preserve">
+    <value>Parameter -WindowStyle is not implemented on this platform.</value>
+  </data>
 </root>