diff --git a/ocrs-cli/src/main.rs b/ocrs-cli/src/main.rs
index 32cb991..9c732df 100644
--- a/ocrs-cli/src/main.rs
+++ b/ocrs-cli/src/main.rs
@@ -105,7 +105,7 @@ struct Args {
     /// Extract each text line found and save as a PNG image.
     text_line_images: bool,
 
-    /// Custom alphabet for recognition.
+    /// Alphabet used by the recognition model.
     /// If not provided, the default alphabet is used.
     alphabet: Option<String>,
 }
@@ -192,7 +192,7 @@ Options:
 
   -a, --alphabet \"alphabet\"
 
-    Use a custom alphabet for recognition
+    Specify the alphabet used by the recognition model
 
   --version