diff --git a/readme.txt b/readme.txt
--- a/readme.txt
+++ b/readme.txt
@@ -667,6 +667,7 @@ Thanks to:
   George                          - Canal graphics
   Andrew Parkhouse (andythenorth) - River graphics
   David Dallaston (Pikka)         - Tram tracks
+  Marcin Grzegorczyk              - Foundations for tracks on slopes",
   All Translators                 - For their support to make OpenTTD a truly international game
   Bug Reporters                   - Thanks for all bug reports
   Chris Sawyer                    - For an amazing game!