diff --git a/examples/runners/wgpu/src/lib.rs b/examples/runners/wgpu/src/lib.rs
index 11cba07c39..0b8e608f76 100644
--- a/examples/runners/wgpu/src/lib.rs
+++ b/examples/runners/wgpu/src/lib.rs
@@ -72,6 +72,7 @@
 // #![allow()]
 
 use clap::Parser;
+use clap::ValueEnum;
 use std::borrow::Cow;
 use strum::{Display, EnumString};
 
@@ -81,7 +82,7 @@ mod compute;
 
 mod graphics;
 
-#[derive(EnumString, Display, PartialEq, Eq, Copy, Clone)]
+#[derive(Debug, EnumString, Display, PartialEq, Eq, Copy, Clone, ValueEnum)]
 pub enum RustGPUShader {
     Simplest,
     Sky,
@@ -224,7 +225,8 @@ fn maybe_watch(
 #[derive(Parser, Clone)]
 #[command()]
 pub struct Options {
-    #[arg(short, long, default_value = "Sky")]
+    /// which shader to run
+    #[arg(short, long, default_value = "sky")]
     shader: RustGPUShader,
 
     #[arg(long)]