diff --git a/verify-coverage-mutants.fsx b/verify-coverage-mutants.fsx
index 81e9b3c..0c68461 100755
--- a/verify-coverage-mutants.fsx
+++ b/verify-coverage-mutants.fsx
@@ -25,7 +25,7 @@ type Command =
 
 type Options =
     { Configuration: string
-      ProjectPath: string option
+      ProjectPath: string
       BuildArgs: string list
       NoBuild: bool
       Command: Command }
@@ -79,19 +79,24 @@ let repoRoot =
     stdout.Trim()
 
 let parseArgs (args: string list) =
+    let usage () =
+        fail "Usage: verify-coverage-mutants.fsx <path/to/project.fsproj> [--configuration Debug|Release] [--build-arg <value> ...] [--no-build] [--list | --show <id> | --run [id...]]"
+
     let rec loop configuration projectPath buildArgs noBuild remaining =
         match remaining with
         | [] -> { Configuration = configuration; ProjectPath = projectPath; BuildArgs = List.rev buildArgs; NoBuild = noBuild; Command = Run [] }
         | "--configuration" :: value :: tail -> loop value projectPath buildArgs noBuild tail
-        | "--project" :: value :: tail -> loop configuration (Some value) buildArgs noBuild tail
         | "--build-arg" :: value :: tail -> loop configuration projectPath (value :: buildArgs) noBuild tail
         | "--no-build" :: tail -> loop configuration projectPath buildArgs true tail
         | "--list" :: tail when tail.IsEmpty -> { Configuration = configuration; ProjectPath = projectPath; BuildArgs = List.rev buildArgs; NoBuild = noBuild; Command = List }
         | "--show" :: id :: tail when tail.IsEmpty -> { Configuration = configuration; ProjectPath = projectPath; BuildArgs = List.rev buildArgs; NoBuild = noBuild; Command = Show id }
         | "--run" :: tail -> { Configuration = configuration; ProjectPath = projectPath; BuildArgs = List.rev buildArgs; NoBuild = noBuild; Command = Run tail }
         | value :: tail when not (value.StartsWith "--") -> { Configuration = configuration; ProjectPath = projectPath; BuildArgs = List.rev buildArgs; NoBuild = noBuild; Command = Run (value :: tail) }
-        | _ -> fail "Usage: dotnet fsi verify-coverage-mutants.fsx [--project <path/to/project.fsproj>] [--configuration Debug|Release] [--build-arg <value> ...] [--no-build] [--list | --show <id> | --run [id...]]"
-    loop "Debug" None [] false args
+        | _ -> usage ()
+
+    match args with
+    | projectPath :: tail when not (projectPath.StartsWith "--") -> loop "Debug" projectPath [] false tail
+    | _ -> usage ()
 
 let options = parseArgs (fsi.CommandLineArgs |> Array.skip 1 |> Array.toList)
 
@@ -114,9 +119,7 @@ let loadProjectInfo (projectPath: string) =
       AbsoluteProjectPath = absoluteProjectPath }
 
 let project =
-    match options.ProjectPath with
-    | Some projectPath -> loadProjectInfo projectPath
-    | None -> fail "Missing required --project <path/to/project.fsproj>."
+    loadProjectInfo options.ProjectPath
 
 let targetPathForProject (workingDirectory: string) (projectPath: string) =
     let exitCode, stdout, stderr =