diff --git a/lib/strings.nix b/lib/strings.nix
index b2808b6693f4..cd0027e1a165 100644
--- a/lib/strings.nix
+++ b/lib/strings.nix
@@ -2115,6 +2115,9 @@ rec {
     `feature`
     : The feature to be set
 
+    `feature`
+    : The feature to be set
+
     `value`
     : The desired value