diff --git a/fs/btrfs/btrfs.mk b/fs/btrfs/btrfs.mk
index ad00153c26..388516389b 100644
--- a/fs/btrfs/btrfs.mk
+++ b/fs/btrfs/btrfs.mk
@@ -29,6 +29,7 @@ BTRFS_OPTS = \
 ROOTFS_BTRFS_DEPENDENCIES = host-btrfs-progs
 
 define ROOTFS_BTRFS_CMD
+	$(RM) -f $@
 	$(HOST_DIR)/bin/mkfs.btrfs $(BTRFS_OPTS) $@
 endef