diff --git a/pkgs/development/libraries/aspell/default.nix b/pkgs/development/libraries/aspell/default.nix
index 38d734e902c..5af340bef07 100644
--- a/pkgs/development/libraries/aspell/default.nix
+++ b/pkgs/development/libraries/aspell/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   '';
 
   # Note: Users should define the `ASPELL_CONF' environment variable to
-  # `dict-dir $HOME/.nix-profile/lib/aspell/' so that they can access
+  # `data-dir $HOME/.nix-profile/lib/aspell/' so that they can access
   # dictionaries installed in their profile.
   #
   # We can't use `$out/etc/aspell.conf' for that purpose since Aspell