diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 0aa31d82..34a3491d 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -1887,7 +1887,8 @@ static void mke2fs_discard_blocks(ext2_filsys fs)
 		ret = ioctl(fd, BLKDISCARD, &range);
 		if (verbose) {
 			printf(_("Calling BLKDISCARD from %llu to %llu "),
-				range[0], range[1]);
+			       (unsigned long long) range[0], 
+			       (unsigned long long) range[1]);
 			if (ret)
 				printf(_("failed.\n"));
 			else