diff --git a/doc/CREDITS b/doc/CREDITS
index c749bf680..618183979 100644
--- a/doc/CREDITS
+++ b/doc/CREDITS
@@ -69,7 +69,7 @@ More special thanks to:
     ...for his public domain Swiftlink/Turbo232 drivers which are part
     of the cc65 library in modified form.
 
-	       
+
 
 Thanks to
 
@@ -90,6 +90,7 @@ Thanks to
     John Weidman <jweidman@slip.net>
     MagerValp <magervalp@cling.gu.se>
     Mark Nasgowitz <MNasgowitz@NAZdesign.com>
+    Piotr Fusik <P.Fusik@elka.pw.edu.pl>
     Robert R. Wal <rrw@reptile.eu.org>
     Tim Vanderhoek <hoek@FreeBSD.org>