diff --git a/nixvim.nix b/nixvim.nix
index 653a4e25..49d2f72c 100644
--- a/nixvim.nix
+++ b/nixvim.nix
@@ -204,7 +204,7 @@ in
       });
 
       configure = {
-        customRC = cfg.extraConfigVim + (optionalString (cfg.colorscheme != "") ''
+        customRC = cfg.extraConfigVim + (optionalString (cfg.colorscheme != "" && cfg.colorscheme != null) ''
           colorscheme ${cfg.colorscheme}
         '') + ''
           lua <<EOF