diff --git a/pkgs/top-level/config.nix b/pkgs/top-level/config.nix
index 3418a44e0f13..2e2507911391 100644
--- a/pkgs/top-level/config.nix
+++ b/pkgs/top-level/config.nix
@@ -76,7 +76,7 @@ let
         Whether to expose old attribute names for compatibility.
 
         The recommended setting is to enable this, as it
-        improves backward compatibity, easing updates.
+        improves backward compatibility, easing updates.
 
         The only reason to disable aliases is for continuous
         integration purposes. For instance, Nixpkgs should