diff --git a/mozilla/calendar/sunbird/base/content/credits.xhtml b/mozilla/calendar/sunbird/base/content/credits.xhtml
index ea3060108e9..ea2579340d1 100644
--- a/mozilla/calendar/sunbird/base/content/credits.xhtml
+++ b/mozilla/calendar/sunbird/base/content/credits.xhtml
@@ -222,6 +222,7 @@
             <li>Martin Schröder</li>
             <li>Mike Shaver</li>
             <li>Stefan Sitter</li>
+            <li>Ulf Stroehler</li>
             <li>Gary van der Merwe</li>
             <li>Michiel van Leeuwen</li>
             <li>Vladimir Vukicevic</li>