diff --git a/src/main/java/de/siphalor/mousewheelie/client/inventory/BundleDragMode.java b/src/main/java/de/siphalor/mousewheelie/client/inventory/BundleDragMode.java
index 70eb6162..2f8eec51 100644
--- a/src/main/java/de/siphalor/mousewheelie/client/inventory/BundleDragMode.java
+++ b/src/main/java/de/siphalor/mousewheelie/client/inventory/BundleDragMode.java
@@ -1,3 +1,20 @@
+/*
+ * Copyright 2020-2022 Siphalor
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied.
+ * See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
 package de.siphalor.mousewheelie.client.inventory;
 
 public enum BundleDragMode {