diff --git a/docs/iamb.5 b/docs/iamb.5
index 56b0b32..0fdab5f 100644
--- a/docs/iamb.5
+++ b/docs/iamb.5
@@ -208,6 +208,9 @@ See
 .Sx "SORTING LISTS"
 for more details.
 
+.It Sy state_event_display
+Defines whether the state events like joined or left are shown.
+
 .It Sy typing_notice_send
 Defines whether or not the typing state is sent.