diff --git a/src/lib/server/database.ts b/src/lib/server/database.ts
index 8f2435d..397a524 100644
--- a/src/lib/server/database.ts
+++ b/src/lib/server/database.ts
@@ -31,7 +31,7 @@ export class User extends Model {
 	declare playertype: 'java' | 'bedrock' | 'noauth';
 	@Column({ type: DataTypes.STRING })
 	declare password: string;
-	@Column({ type: DataTypes.UUID })
+	@Column({ type: DataTypes.UUID, unique: true })
 	@Index
 	declare uuid: string;
 }