diff --git a/src/Aspire.Cli/Commands/RunCommand.cs b/src/Aspire.Cli/Commands/RunCommand.cs
index 955a2dd8215..b7d9b1e70c1 100644
--- a/src/Aspire.Cli/Commands/RunCommand.cs
+++ b/src/Aspire.Cli/Commands/RunCommand.cs
@@ -38,7 +38,7 @@ protected override async Task<int> ExecuteAsync(ParseResult parseResult, Cancell
     {
         using var activity = _activitySource.StartActivity();
 
-        var passedAppHostProjectFile = parseResult.GetValue<FileInfo?>("project");
+        var passedAppHostProjectFile = parseResult.GetValue<FileInfo?>("--project");
         var effectiveAppHostProjectFile = ProjectFileHelper.UseOrFindAppHostProjectFile(passedAppHostProjectFile);
         
         if (effectiveAppHostProjectFile is null)