diff --git a/src/event/server_events.c b/src/event/server_events.c
index bda81f25..c8a5b760 100644
--- a/src/event/server_events.c
+++ b/src/event/server_events.c
@@ -599,7 +599,10 @@ sv_ev_muc_self_online(const char *const room, const char *const nick, gboolean c
 
             // affiliation changed
             } else if (g_strcmp0(affiliation, old_affiliation) != 0) {
-                mucwin_affiliation_change(room, affiliation, actor, reason);
+                ProfMucWin *mucwin = wins_get_muc(room);
+                if (mucwin) {
+                    mucwin_affiliation_change(mucwin, affiliation, actor, reason);
+                }
             }
         }
     }
diff --git a/src/ui/mucwin.c b/src/ui/mucwin.c
index 8eaac733..e795d3fb 100644
--- a/src/ui/mucwin.c
+++ b/src/ui/mucwin.c
@@ -41,8 +41,7 @@
 #include "ui/window.h"
 
 void
-mucwin_role_change(ProfMucWin *mucwin, const char *const role, const char *const actor,
-    const char *const reason)
+mucwin_role_change(ProfMucWin *mucwin, const char *const role, const char *const actor, const char *const reason)
 {
     assert(mucwin != NULL);
 
@@ -58,10 +57,12 @@ mucwin_role_change(ProfMucWin *mucwin, const char *const role, const char *const
 }
 
 void
-mucwin_affiliation_change(const char *const roomjid, const char *const affiliation, const char *const actor,
+mucwin_affiliation_change(ProfMucWin *mucwin, const char *const affiliation, const char *const actor,
     const char *const reason)
 {
-    ProfWin *window = (ProfWin*)wins_get_muc(roomjid);
+    assert(mucwin != NULL);
+
+    ProfWin *window = (ProfWin*)mucwin;
     win_vprint(window, '!', 0, NULL, NO_EOL, THEME_ROOMINFO, "", "Your affiliation has been changed to: %s", affiliation);
     if (actor) {
         win_vprint(window, '!', 0, NULL, NO_DATE | NO_EOL, THEME_ROOMINFO, "", ", by: %s", actor);
diff --git a/src/ui/ui.h b/src/ui/ui.h
index 4c312c23..e41a05ef 100644
--- a/src/ui/ui.h
+++ b/src/ui/ui.h
@@ -162,7 +162,7 @@ void chatwin_otr_smp_event(ProfChatWin *chatwin, prof_otr_smp_event_t event, voi
 
 // MUC window
 void mucwin_role_change(ProfMucWin *mucwin, const char *const role, const char *const actor, const char *const reason);
-void mucwin_affiliation_change(const char *const roomjid, const char *const affiliation, const char *const actor,
+void mucwin_affiliation_change(ProfMucWin *mucwin, const char *const affiliation, const char *const actor,
     const char *const reason);
 void mucwin_role_and_affiliation_change(const char *const roomjid, const char *const role,
     const char *const affiliation, const char *const actor, const char *const reason);
diff --git a/tests/unittests/ui/stub_ui.c b/tests/unittests/ui/stub_ui.c
index e09c8199..94b87068 100644
--- a/tests/unittests/ui/stub_ui.c
+++ b/tests/unittests/ui/stub_ui.c
@@ -193,7 +193,7 @@ void ui_switch_to_room(const char * const roomjid) {}
 
 void mucwin_role_change(ProfMucWin *mucwin, const char * const role, const char * const actor,
     const char * const reason) {}
-void mucwin_affiliation_change(const char * const roomjid, const char * const affiliation, const char * const actor,
+void mucwin_affiliation_change(ProfMucWin *mucwin, const char * const affiliation, const char * const actor,
     const char * const reason) {}
 void mucwin_role_and_affiliation_change(const char * const roomjid, const char * const role,
     const char * const affiliation, const char * const actor, const char * const reason) {}