diff --git a/installer.nix b/installer.nix
index f6d52a1..b87a050 100644
--- a/installer.nix
+++ b/installer.nix
@@ -36,7 +36,7 @@ environment.etc."git-credentials".text =
 
     set -euo pipefail
 
-FLAKE_BASE_URL="git+https://gitea.lan.ddnsgeek.com/beatzaplenty/nixos.git"
+export FLAKE_BASE_URL="git+https://gitea.lan.ddnsgeek.com/beatzaplenty/nixos.git"
 
 # Menu options
 options=("nixos" "docker" "server" "nix-cache" "nix-minimal")