diff --git a/README.md b/README.md
index b8d1aff687b16838c046707228b08e4564d50a4d..bc024346f801d506ff8c3c5638c3f5435c4a2a25 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ Generate new invoice:
 invoice generate \
     --item "Yellow Rubber Duck" --quantity 5 \
     --item "Special Edition Plaid Rubber Duck" --quantity 1 \
-    --notes "For debugging purposes."
+    --note "For debugging purposes." \
     --output duck-invoice.pdf
 ```