diff --git a/script/locale/diff b/script/locale/diff
index 8ce35ad5c..ddfe5913c 100755
--- a/script/locale/diff
+++ b/script/locale/diff
@@ -18,7 +18,7 @@ locale-diff - Compare two YAML files and print how their datastructures differ
     diff --keys en.yml is.yml
 
     # --untranslated-values compares prints keys whose values don't differ
-    diff --untranslated-values-all en.yml is.yml
+    diff --untranslated-values en.yml is.yml
 
     # --untranslated-values-all compares prints keys whose values
     # don't differ. Ignoring the blacklist which prunes things