diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
index e76b3484fce9..505c7c50d1dc 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
@@ -5147,7 +5147,7 @@ l2arc_compress_buf(l2arc_buf_hdr_t *l2hdr)
 	len = l2hdr->b_asize;
 	cdata = zio_data_buf_alloc(len);
 	csize = zio_compress_data(ZIO_COMPRESS_LZ4, l2hdr->b_tmp_cdata,
-	    cdata, l2hdr->b_asize, (size_t)SPA_MINBLOCKSIZE);
+	    cdata, l2hdr->b_asize, (size_t)(1ULL << l2hdr->b_dev->l2ad_vdev->vdev_ashift));
 
 	if (csize == 0) {
 		/* zero block, indicate that there's nothing to write */