diff --git a/lib/gunzip.c b/lib/gunzip.c
index 6d65ccc..bc746d6 100644
--- a/lib/gunzip.c
+++ b/lib/gunzip.c
@@ -232,9 +232,8 @@ int gzwrite(unsigned char *src, int len,
 			gzwrite_progress(iteration++,
 					 totalfilled,
 					 szexpected);
-			blocks_written = dev->block_write(dev, outblock,
-							  writeblocks,
-							  writebuf);
+			blocks_written = blk_dwrite(dev, outblock,
+						    writeblocks, writebuf);
 			outblock += blocks_written;
 			if (ctrlc()) {
 				puts("abort\n");