diff --git a/moz-webgpu-cts/src/main.rs b/moz-webgpu-cts/src/main.rs
index fe352ca..738aa2b 100644
--- a/moz-webgpu-cts/src/main.rs
+++ b/moz-webgpu-cts/src/main.rs
@@ -86,6 +86,7 @@ enum Subcommand {
         #[clap(long)]
         preset: ReportProcessingPreset,
     },
+    /// Parse test metadata and re-emit it in normalized form.
     #[clap(name = "fmt")]
     Format,
     Triage {