diff --git a/doc/ack.texi b/doc/ack.texi
index 3c605fb76..1e863daeb 100644
--- a/doc/ack.texi
+++ b/doc/ack.texi
@@ -39,6 +39,7 @@ Bugfixes, documentation, encouragement, and code has been contributed by:
 @item Alexander Boström
 @item Andreaw Bartlett
 @item Björn Sandell
+@item Björn Schlögl
 @item Brandon S. Allbery KF8NH
 @item Brian A May
 @item Chaskiel M Grundman