diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 0ef9d86..7add85a 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -146,7 +146,7 @@
 
 #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2
 
-#define BTRFS_DEV_REPLACE_DEVID 0
+#define BTRFS_DEV_REPLACE_DEVID 0ULL
 
 /*
  * the max metadata block size.  This limit is somewhat artificial,
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index e34e72f..af800ef 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -154,7 +154,7 @@
 		    !btrfs_test_opt(dev_root, DEGRADED)) {
 			ret = -EIO;
 			pr_warn("btrfs: cannot mount because device replace operation is ongoing and\n" "tgtdev (devid %llu) is missing, need to run btrfs dev scan?\n",
-				(unsigned long long)BTRFS_DEV_REPLACE_DEVID);
+				BTRFS_DEV_REPLACE_DEVID);
 		}
 		if (dev_replace->tgtdev) {
 			if (dev_replace->srcdev) {