diff --git a/fs/common.mk b/fs/common.mk
index 45beb5ae..ddbb4a74 100644
--- a/fs/common.mk
+++ b/fs/common.mk
@@ -149,7 +149,7 @@ endif
 ifeq ($$(BR2_TARGET_ROOTFS_$(2)_XZ),y)
 ROOTFS_$(2)_DEPENDENCIES += host-xz
 ROOTFS_$(2)_COMPRESS_EXT = .xz
-ROOTFS_$(2)_COMPRESS_CMD = xz -9 -C crc32 -c
+ROOTFS_$(2)_COMPRESS_CMD = xz -6 -C crc32 -c
 ifeq ($(BR2_REPRODUCIBLE),)
 ROOTFS_$(2)_COMPRESS_CMD += -T $(PARALLEL_JOBS)
 endif