diff --git a/.mailmap b/.mailmap
index ab02bdfe6..a7a752f7f 100644
--- a/.mailmap
+++ b/.mailmap
@@ -105,3 +105,6 @@ Derrick Dymock <actown@gmail.com> Derrick Dymock <derrick@puppetlabs.com>
 
 # Alias of Joel Kees <joelkees@gmail.com>
 Joel Kees <joelkees@gmail.com> Joeliam <joelkees@gmail.com>
+
+# Alias of Karl Dietz <dekarl@users.sourceforge.net>
+Karl Dietz <dekarl@spaetfruehstuecken.org> Karl Dietz <dekarl@users.sourceforge.net>