diff --git a/home/programs/fzf.nix b/home/programs/fzf.nix
index 6248c19..a6304db 100644
--- a/home/programs/fzf.nix
+++ b/home/programs/fzf.nix
@@ -38,5 +38,7 @@ in
     tmux.enableShellIntegration = lib.mkIf has-tmux true;
   };
 
-  home.sessionVariables.fzf_diff_highlighter = lib.mkIf has-delta "delta --paging=never --features=arctic-fox";
+  home.sessionVariables = lib.mkIf has-delta {
+    fzf_diff_highlighter = "delta --paging=never --features=arctic-fox";
+  };
 }