diff --git a/README.md b/README.md
index af8c442..15c139f 100644
--- a/README.md
+++ b/README.md
@@ -128,7 +128,7 @@ Errors follow the same pattern — table mode prints `Error: ...` to stderr, JSO
 ```bash
 # List markets with filters
 polymarket markets list --limit 10
-polymarket markets list --active true --order volume_num
+polymarket markets list --active true --order volume
 polymarket markets list --closed false --limit 50 --offset 25
 
 # Get a single market by ID or slug
diff --git a/src/commands/markets.rs b/src/commands/markets.rs
index 68e5491..78f00e7 100644
--- a/src/commands/markets.rs
+++ b/src/commands/markets.rs
@@ -42,7 +42,7 @@ pub enum MarketsCommand {
         #[arg(long)]
         offset: Option<i32>,
 
-        /// Sort field (e.g. `volume_num`, `liquidity_num`)
+        /// Sort field (e.g. `volume`, `liquidity`)
         #[arg(long)]
         order: Option<String>,