diff --git a/backends/trtllm/src/main.rs b/backends/trtllm/src/main.rs
index ee143072..0a0d28c0 100644
--- a/backends/trtllm/src/main.rs
+++ b/backends/trtllm/src/main.rs
@@ -27,7 +27,7 @@ struct Args {
     hostname: String,
     #[clap(default_value = "3000", long, short, env)]
     port: u16,
-    #[clap(default_value = "bigscience/bloom", long, env)]
+    #[clap(long, env, required = true)]
     tokenizer_name: String,
     #[clap(long, env)]
     tokenizer_config_path: Option<String>,