diff --git a/build-aux/m4/buildsys.m4 b/build-aux/m4/buildsys.m4
index 3e5f8ed..9574b5e 100644
--- a/build-aux/m4/buildsys.m4
+++ b/build-aux/m4/buildsys.m4
@@ -328,6 +328,9 @@ AC_DEFUN([BUILDSYS_FRAMEWORK], [
 
 		$1
 		;;
+	*)
+		$2
+		;;
 	esac
 ])
 
@@ -385,5 +388,8 @@ AC_DEFUN([BUILDSYS_BUNDLE], [
 
 		$1
 		;;
+	*)
+		$2
+		;;
 	esac
 ])