diff --git a/shader/lanczos3.frag b/shader/lanczos3.frag
index 81225928..5f105670 100644
--- a/shader/lanczos3.frag
+++ b/shader/lanczos3.frag
@@ -1,5 +1,6 @@
 // From https://raw.githubusercontent.com/Sentmoraap/doing-sdl-right/93a52a0db0ff2da5066cce12f5b9a2ac62e6f401/assets/lanczos3.frag
 // Copyright 2020 Lilian Gimenez (Sentmoraap).
+// mkxp-z modifications Copyright 2022-2023 Splendide Imaginarius.
 // MIT license.
 
 precision highp float;