diff --git a/internal/manager/persistence/workers.go b/internal/manager/persistence/workers.go
index 2f44632b..b80b0b0e 100644
--- a/internal/manager/persistence/workers.go
+++ b/internal/manager/persistence/workers.go
@@ -16,7 +16,7 @@ type Worker struct {
 	Model
 	DeletedAt gorm.DeletedAt `gorm:"index"`
 
-	UUID   string `gorm:"type:char(36);default:'';unique;index;default:''"`
+	UUID   string `gorm:"type:char(36);default:'';unique;index"`
 	Secret string `gorm:"type:varchar(255);default:''"`
 	Name   string `gorm:"type:varchar(64);default:''"`