diff --git a/LICENSE.txt b/LICENSE.txt
index bca6773..e2a0e03 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -3,7 +3,9 @@ Media:
 Portal, item and controller textures: CC BY-SA (4.0) by Piezo_
 GUI Elements: See <https://github.com/minetest-mods/unified_inventory/blob/master/README.md>
 Models: CC BY (4.0) by Piezo_
-Sounds: CC BY (4.0) by Piezo_
+Sounds: 
+	Portal noises (open, close, warp): CC BY (4.0) by Piezo_
+	GUI sounds: (click and paperflip2.ogg) See <https://github.com/minetest-mods/unified_inventory/blob/master/README.md>
 
 Source code: