diff --git a/README.md b/README.md
index 52dec70..dbc8b53 100644
--- a/README.md
+++ b/README.md
@@ -97,7 +97,7 @@ aquatic-crawler --infohash /path/to/info-hash-ipv4.json\
           Enable UPnP
 
       --enable-upload
-          Enable upload
+          Enable upload (share received bytes with BitTorrent network)
 
       --preload <PRELOAD>
           Directory path to store preloaded data (e.g. `.torrent` files)
diff --git a/src/config.rs b/src/config.rs
index f571ba0..74681fd 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -57,7 +57,7 @@ pub struct Config {
     #[arg(long, default_value_t = false)]
     pub enable_upnp_port_forwarding: bool,
 
-    /// Enable upload
+    /// Enable upload (share received bytes with BitTorrent network)
     #[arg(long, default_value_t = false)]
     pub enable_upload: bool,