diff --git a/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/AttachmentViewerActivity.kt b/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/AttachmentViewerActivity.kt
index d6cf7c606a..8c2d4e9833 100644
--- a/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/AttachmentViewerActivity.kt
+++ b/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/AttachmentViewerActivity.kt
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020 New Vector Ltd
+ * Copyright (C) 2018 stfalcon.com
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeDirection.kt b/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeDirection.kt
index e552d55efb..ebe8784e15 100644
--- a/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeDirection.kt
+++ b/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeDirection.kt
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020 New Vector Ltd
+ * Copyright (C) 2018 stfalcon.com
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeDirectionDetector.kt b/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeDirectionDetector.kt
index cedbcd0180..0cf9a19ab1 100644
--- a/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeDirectionDetector.kt
+++ b/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeDirectionDetector.kt
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020 New Vector Ltd
+ * Copyright (C) 2018 stfalcon.com
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeToDismissHandler.kt b/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeToDismissHandler.kt
index e52c72cba0..ca93d4f73a 100644
--- a/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeToDismissHandler.kt
+++ b/attachment-viewer/src/main/java/im/vector/riotx/attachmentviewer/SwipeToDismissHandler.kt
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020 New Vector Ltd
+ * Copyright (C) 2018 stfalcon.com
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/vector/src/main/assets/open_source_licenses.html b/vector/src/main/assets/open_source_licenses.html
index 3af564aaca..58d63bf5a7 100755
--- a/vector/src/main/assets/open_source_licenses.html
+++ b/vector/src/main/assets/open_source_licenses.html
@@ -389,6 +389,9 @@ SOFTWARE.
     <li>
         <b>BillCarsonFr/JsonViewer</b>
     </li>
+    <li>
+        <b>Copyright (C) 2018 stfalcon.com</b>
+    </li>
 </ul>
 <pre>
 Apache License