diff --git a/pkgs/data/themes/colloid-gtk-theme/default.nix b/pkgs/data/themes/colloid-gtk-theme/default.nix
index be35d1c544bb..ef69114c855e 100644
--- a/pkgs/data/themes/colloid-gtk-theme/default.nix
+++ b/pkgs/data/themes/colloid-gtk-theme/default.nix
@@ -18,7 +18,7 @@ in
 lib.checkListOfEnum "${pname}: theme variants" [ "default" "purple" "pink" "red" "orange" "yellow" "green" "teal" "grey" "all" ] themeVariants
 lib.checkListOfEnum "${pname}: color variants" [ "standard" "light" "dark" ] colorVariants
 lib.checkListOfEnum "${pname}: size variants" [ "standard" "compact" ] sizeVariants
-lib.checkListOfEnum "${pname}: tweaks" [ "nord" "dracula" "gruvbox" "all" "black" "rimless" "normal" "float" ] tweaks
+lib.checkListOfEnum "${pname}: tweaks" [ "nord" "dracula" "gruvbox" "everforest" "all" "black" "rimless" "normal" "float" ] tweaks
 
 stdenvNoCC.mkDerivation rec {
   inherit pname;