diff --git a/src/Microsoft.PowerShell.ConsoleHost/host/msh/CommandLineParameterParser.cs b/src/Microsoft.PowerShell.ConsoleHost/host/msh/CommandLineParameterParser.cs
index f65736a52dc..4c0478add31 100644
--- a/src/Microsoft.PowerShell.ConsoleHost/host/msh/CommandLineParameterParser.cs
+++ b/src/Microsoft.PowerShell.ConsoleHost/host/msh/CommandLineParameterParser.cs
@@ -921,7 +921,7 @@ private void ParseHelper(string[] args)
                     ParseFormat(args, ref i, ref _outFormat, CommandLineParameterParserStrings.MissingOutputFormatParameter);
                     _outputFormatSpecified = true;
                 }
-                else if (MatchSwitch(switchKey, "inputformat", "in") || MatchSwitch(switchKey, "if", "if"))
+                else if (MatchSwitch(switchKey, "inputformat", "inp") || MatchSwitch(switchKey, "if", "if"))
                 {
                     ParseFormat(args, ref i, ref _inFormat, CommandLineParameterParserStrings.MissingInputFormatParameter);
                 }