diff --git a/doc/concepts/intermud b/doc/concepts/intermud
index abe2b4f..5db726b 100644
--- a/doc/concepts/intermud
+++ b/doc/concepts/intermud
@@ -8,7 +8,7 @@
         implementations is limited.
 
         This text is about the rather old widely spread 'Zebedee Intermud',
-        which is also called 'Intermud 2' altough it differs quite a lot
+        which is also called 'Intermud 2' although it differs quite a lot
         from the real Intermud 2 protocol.
 
         Full information on the newer Intermud 3 could be found on the