Index: btrfs-progs-v0.20-rc1-253-g7854c8b/cmds-device.c
===================================================================
--- btrfs-progs-v0.20-rc1-253-g7854c8b.orig/cmds-device.c
+++ btrfs-progs-v0.20-rc1-253-g7854c8b/cmds-device.c
@@ -294,7 +294,7 @@ static int cmd_dev_stats(int argc, char
 	int ret;
 	int fdmnt;
 	int i;
-	char c;
+	int c;
 	int err = 0;
 	__u64 flags = 0;