diff --git a/include/inject.sh b/include/inject.sh
index cd71bfc..1a6e8d0 100644
--- a/include/inject.sh
+++ b/include/inject.sh
@@ -60,8 +60,6 @@ check_release()
 	case "$archivename" in
 	*_src.tar.xz)
 		err "'$archive' is a src archive, silly!" ;;
-	grub_*|seagrub_*|custom_*|seauboot_*|seabios_withgrub_*)
-		err "'$archive' is a ROM image (it must be a tarball)" ;;
 	*.tar.xz) _stripped_prefix="${archivename#*_}"
 		board="${_stripped_prefix%.tar.xz}" ;;
 	*)