diff --git a/src/QsFmt/App/CommandLineArguments.fs b/src/QsFmt/App/CommandLineArguments.fs
index b7a216e56a..11a130be61 100644
--- a/src/QsFmt/App/CommandLineArguments.fs
+++ b/src/QsFmt/App/CommandLineArguments.fs
@@ -20,7 +20,7 @@ type FormatArguments =
         [<Option("qsharp-version", SetName = "INPUT_FILES", HelpText = "Option to provide a Q# version to the tool.")>]
         QdkVersion: string
         [<Option('i',
-                 "inputs",
+                 "input",
                  SetName = "INPUT_FILES",
                  Required = true,
                  Min = 1,
@@ -77,7 +77,7 @@ type UpdateArguments =
         [<Option("qsharp-version", SetName = "INPUT_FILES", HelpText = "Option to provide a Q# version to the tool.")>]
         QdkVersion: string
         [<Option('i',
-                 "inputs",
+                 "input",
                  SetName = "INPUT_FILES",
                  Required = true,
                  Min = 1,
@@ -133,7 +133,7 @@ type Arguments =
         RecurseFlag: bool
         BackupFlag: bool
         QSharp_Version: Version option
-        Inputs: string list
+        Input: string list
     }
 
 module Arguments =
@@ -158,7 +158,7 @@ module Arguments =
 
         if List.isEmpty errors then
 
-            let inputs, version =
+            let input, version =
                 if isNull arguments.ProjectFile then
                     arguments.InputFiles |> Seq.toList, arguments.QdkVersion |> Option.ofObj
                 else
@@ -176,7 +176,7 @@ module Arguments =
                     RecurseFlag = arguments.Recurse
                     BackupFlag = arguments.Backup
                     QSharp_Version = qsharp_version
-                    Inputs = inputs
+                    Input = input
                 }
                 |> Result.Ok
         else
diff --git a/src/QsFmt/App/CommandLineArguments.fsi b/src/QsFmt/App/CommandLineArguments.fsi
index 386c905aa2..cf3e93f722 100644
--- a/src/QsFmt/App/CommandLineArguments.fsi
+++ b/src/QsFmt/App/CommandLineArguments.fsi
@@ -77,7 +77,7 @@ module Microsoft.Quantum.QsFmt.App.Arguments
             QSharp_Version: Version option
 
             /// The paths to the files to process.
-            Inputs: string list
+            Input: string list
         }
 
     module internal Arguments =
diff --git a/src/QsFmt/App/Program.fs b/src/QsFmt/App/Program.fs
index ebbe189fa1..f9400ecd04 100644
--- a/src/QsFmt/App/Program.fs
+++ b/src/QsFmt/App/Program.fs
@@ -76,7 +76,7 @@ let run arguments inputs =
 
 let runUpdate (arguments: UpdateArguments) =
     match Arguments.fromUpdateArguments arguments with
-    | Ok args -> args.Inputs |> run args
+    | Ok args -> args.Input |> run args
     | Error errorCode -> errorCode
 
 let runFormat (arguments: FormatArguments) =
@@ -90,7 +90,7 @@ let runFormat (arguments: FormatArguments) =
         }
 
     match Arguments.fromUpdateArguments asUpdateArguments with
-    | Ok args -> args.Inputs |> run { args with CommandKind = Format }
+    | Ok args -> args.Input |> run { args with CommandKind = Format }
     | Error errorCode -> errorCode
 
 [<CompiledName "Main">]