diff --git a/src/Gui/AboutDialog.cpp b/src/Gui/AboutDialog.cpp
index d5d920f69..dd3d28ace 100644
--- a/src/Gui/AboutDialog.cpp
+++ b/src/Gui/AboutDialog.cpp
@@ -152,6 +152,7 @@ ContributorsPage::ContributorsPage(Context *context) : context(context)
     contributors.append("Jan de Visser");
     contributors.append("Jim Ley");
     contributors.append("Jörn Rischmüller");
+    contributors.append("Joachim Kohlhammer");
     contributors.append("Johan Martensson");
     contributors.append("John Ehrlinger");
     contributors.append("Jon Beverley");