diff --git a/home/bat/default.nix b/home/bat/default.nix
index 94ddad6..16641be 100644
--- a/home/bat/default.nix
+++ b/home/bat/default.nix
@@ -20,7 +20,7 @@
   };
 
   home.sessionVariables = lib.mkIf config.home.preferXdgDirectories {
-    BATDIFF_USE_DELTA = true;
+    BATDIFF_USE_DELTA = "true";
   };
 
   programs.fish = lib.mkIf config.programs.fish.enable {
diff --git a/home/less/default.nix b/home/less/default.nix
index 34203f1..3761235 100644
--- a/home/less/default.nix
+++ b/home/less/default.nix
@@ -1,14 +1,8 @@
-{
-  lib,
-  config,
-  ...
-}: {
+{...}: {
   programs.less.enable = true;
 
-  programs.fish = lib.mkIf config.programs.fish.enable {
-    interactiveShellInit = ''
-      set -gx LESS -R
-    '';
+  home.sessionVariables = {
+    LESS = "-R";
   };
 
   programs.lesspipe.enable = true;