diff --git a/overlays/derivations/nu/cfg/env.nu b/overlays/derivations/nu/cfg/env.nu
index 3baaa29..9de30a7 100644
--- a/overlays/derivations/nu/cfg/env.nu
+++ b/overlays/derivations/nu/cfg/env.nu
@@ -17,6 +17,8 @@
 # You can remove these comments if you want or leave
 # them for future reference.
 
+def co
+
 $env = {
   config = {
     hooks: {
@@ -36,4 +38,5 @@ $env = {
     }
     show_banner: false
   }
+  LS_COLOURS = ""
 }