diff --git a/nixos/modules/installer/tools/nixos-generate-config.pl b/nixos/modules/installer/tools/nixos-generate-config.pl
index 1038fadec37d..c2da16f2c436 100644
--- a/nixos/modules/installer/tools/nixos-generate-config.pl
+++ b/nixos/modules/installer/tools/nixos-generate-config.pl
@@ -691,7 +691,7 @@ if ($showHardwareConfig) {
             print STDERR "writing $fn...\n";
             mkpath($outDir, 0, 0755);
             write_file($fn, <<EOF);
-            @flake@
+@flake@
 EOF
         } else {
             print STDERR "warning: not overwriting existing $fn\n";