diff --git a/pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.sh b/pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.sh
index 02614aea6d0b..7441be07af32 100644
--- a/pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.sh
+++ b/pkgs/os-specific/linux/nixos-rebuild/nixos-rebuild.sh
@@ -215,7 +215,7 @@ nixBuild() {
 
 nixFlakeBuild() {
     if [ -z "$buildHost" ]; then
-        nix build "$@" --out-link "${tmpDir}/result"
+        nix "${flakeFlags[@]}" build "$@" --out-link "${tmpDir}/result"
         readlink -f "${tmpDir}/result"
     else
         local attr="$1"