diff --git a/lxd/migration/utils.go b/lxd/migration/utils.go
index <HASH>..<HASH> 100644
--- a/lxd/migration/utils.go
+++ b/lxd/migration/utils.go
@@ -1,6 +1,6 @@
 package migration
 
-// BTRFSFeatureMigrationHeader indicates a migration header will be sent/recv in data channel first.
+// BTRFSFeatureMigrationHeader indicates a migration header will be sent/recv in data channel after index header.
 const BTRFSFeatureMigrationHeader = "migration_header"
 
 // BTRFSFeatureSubvolumes indicates migration can send/recv subvolumes.
@@ -9,7 +9,7 @@ const BTRFSFeatureSubvolumes = "header_subvolumes"
 // BTRFSFeatureSubvolumeUUIDs indicates that the header will include subvolume UUIDs.
 const BTRFSFeatureSubvolumeUUIDs = "header_subvolume_uuids"
 
-// ZFSFeatureMigrationHeader indicates a migration header will be sent/recv in data channel first.
+// ZFSFeatureMigrationHeader indicates a migration header will be sent/recv in data channel after index header.
 const ZFSFeatureMigrationHeader = "migration_header"
 
 // GetRsyncFeaturesSlice returns a slice of strings representing the supported RSYNC features
lxd/migration/utils: Updates comments on constant to indicate index header may be sent first