diff --git a/src/main.rs b/src/main.rs
index ec68b55..10caf16 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -48,7 +48,7 @@ struct Args {
     pub raw: bool,
 
     /// The roots to use for discovery.
-    #[clap(required = true)]
+    #[clap(default_value = ".")]
     pub roots: Vec<PathBuf>,
 }