diff --git a/raycastlib.h b/raycastlib.h
index 27534c9..8512018 100644
--- a/raycastlib.h
+++ b/raycastlib.h
@@ -27,7 +27,9 @@
   - Screen coordinates are normal: [0,0] = top left, x goes right, y goes down.
 
   author: Miloslav "drummyfish" Ciz
-  license: CC0 1.0 + all IP waiver
+  license: CC0 1.0 (public domain)
+           found at https://creativecommons.org/publicdomain/zero/1.0/
+           + additional waiver of all IP
   version: 0.8
   
   -----