diff --git a/targets/bcm27xx.inc b/targets/bcm27xx.inc
index e15988b4d3cf11f6ef552bff2f1d16c909d51a53..2898fda4c881e14e70d6fae3a14c6f0433e91dfb 100644
--- a/targets/bcm27xx.inc
+++ b/targets/bcm27xx.inc
@@ -1,6 +1,7 @@
+-- We do not use the ext4 images, so we do not want to build them.
+config('TARGET_ROOTFS_EXT4FS', false)
+
 defaults {
-	factory = '-ext4-factory',
 	factory_ext = '.img.gz',
-	sysupgrade = '-ext4-sysupgrade',
 	sysupgrade_ext = '.img.gz',
 }