diff --git a/src/bin/main.rs b/src/bin/main.rs
index 5cff5d0..42f6a46 100644
--- a/src/bin/main.rs
+++ b/src/bin/main.rs
@@ -41,8 +41,10 @@ enum Command {
     },
     /// Convert a file to a different format
     Convert {
+        /// Output in a single file
         #[structopt(short, long)]
         single_file: bool,
+        /// Enable Zstd compression
         #[structopt(short, long)]
         zstd: bool,
         #[structopt(parse(from_os_str))]