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 6e6b65ec2d72..354e4d6746c3 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
@@ -5205,7 +5205,7 @@ 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)(1ULL << l2hdr->b_dev->l2ad_vdev->vdev_ashift));
+	    cdata, l2hdr->b_asize);
 
 	rounded = P2ROUNDUP(csize, (size_t)SPA_MINBLOCKSIZE);
 	if (rounded > csize) {
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio_compress.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio_compress.h
index c0be314e63bb..a617735315f2 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio_compress.h
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio_compress.h
@@ -81,7 +81,7 @@ extern int lz4_decompress(void *src, void *dst, size_t s_len, size_t d_len,
  * Compress and decompress data if necessary.
  */
 extern size_t zio_compress_data(enum zio_compress c, void *src, void *dst,
-    size_t s_len, size_t minblocksize);
+    size_t s_len);
 extern int zio_decompress_data(enum zio_compress c, void *src, void *dst,
     size_t s_len, size_t d_len);
 
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c
index 427f5442b249..96e8cac4255f 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c
@@ -1160,10 +1160,8 @@ zio_write_bp_init(zio_t **ziop)
 	}
 
 	if (compress != ZIO_COMPRESS_OFF) {
-		metaslab_class_t *mc = spa_normal_class(spa);
 		void *cbuf = zio_buf_alloc(lsize);
-		psize = zio_compress_data(compress, zio->io_data, cbuf, lsize,
-		    (size_t)metaslab_class_get_minblocksize(mc));
+		psize = zio_compress_data(compress, zio->io_data, cbuf, lsize);
 		if (psize == 0 || psize == lsize) {
 			compress = ZIO_COMPRESS_OFF;
 			zio_buf_free(cbuf, lsize);
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio_compress.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio_compress.c
index 502335b22d54..87f3262f3b2b 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio_compress.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio_compress.c
@@ -97,8 +97,7 @@ zio_compress_select(enum zio_compress child, enum zio_compress parent)
 }
 
 size_t
-zio_compress_data(enum zio_compress c, void *src, void *dst, size_t s_len,
-    size_t minblocksize)
+zio_compress_data(enum zio_compress c, void *src, void *dst, size_t s_len)
 {
 	uint64_t *word, *word_end;
 	size_t c_len, d_len;