diff --git a/src/cli/cli_t.rs b/src/cli/cli_t.rs
index 9b5d04e..0ab555c 100644
--- a/src/cli/cli_t.rs
+++ b/src/cli/cli_t.rs
@@ -46,7 +46,7 @@ pub struct Cli {
     pub max_decimals: u8,
 
     /// Amount of data
-    #[arg(default_value_t = ShowDays::Days(1), long="show_days", short='s')]
+    #[arg(default_value_t = ShowDays::Days(1), long="show-days", short='s')]
     pub show_days: ShowDays,
 }