diff --git a/lib/backup/actions/backup.go b/lib/backup/actions/backup.go
index 11cce6900a..b40ec8afbd 100644
--- a/lib/backup/actions/backup.go
+++ b/lib/backup/actions/backup.go
@@ -28,7 +28,6 @@ var (
 // made via `/snapshot/create`. It works improperly on mutable files.
 type Backup struct {
 	// Concurrency is the number of concurrent workers during the backup.
-	// Concurrency=1 by default.
 	Concurrency int
 
 	// Src is backup source
diff --git a/lib/backup/actions/restore.go b/lib/backup/actions/restore.go
index 62cf89c031..14a64e17b2 100644
--- a/lib/backup/actions/restore.go
+++ b/lib/backup/actions/restore.go
@@ -22,7 +22,6 @@ import (
 // It works improperly on mutable files.
 type Restore struct {
 	// Concurrency is the number of concurrent workers to run during restore.
-	// Concurrency=1 is used by default.
 	Concurrency int
 
 	// Src is the source containing backed up data.