diff --git a/nix-on-droid/default.nix b/nix-on-droid/default.nix
index 5760e6a..621e896 100644
--- a/nix-on-droid/default.nix
+++ b/nix-on-droid/default.nix
@@ -119,8 +119,8 @@ in {
     # https://github.com/nix-community/nix-on-droid/pull/270
     extraOptions = ''
       experimental-features = nix-command flakes
-      extra-substituters http://100.81.15.62:8080/elxreno
-      extra-trusted-public-keys elxreno:tZ38Gs0Wmc5fpulInZeahMwgFyFzFBRMTxFlx4LwRVE=
+      extra-substituters = http://100.81.15.62:8080/elxreno
+      extra-trusted-public-keys = elxreno:tZ38Gs0Wmc5fpulInZeahMwgFyFzFBRMTxFlx4LwRVE=
     '';
 
     registry.nixpkgs.flake = inputs.nixpkgs;