diff --git a/src/event/server_events.c b/src/event/server_events.c
index 3982f14c..6254d725 100644
--- a/src/event/server_events.c
+++ b/src/event/server_events.c
@@ -664,7 +664,10 @@ sv_ev_muc_occupant_online(const char *const room, const char *const nick, const
 
             // role changed
             } else if (g_strcmp0(role, old_role) != 0) {
-                mucwin_occupant_role_change(room, nick, role, actor, reason);
+                ProfMucWin *mucwin = wins_get_muc(room);
+                if (mucwin) {
+                    mucwin_occupant_role_change(mucwin, nick, role, actor, reason);
+                }
 
             // affiliation changed
             } else if (g_strcmp0(affiliation, old_affiliation) != 0) {
diff --git a/src/ui/mucwin.c b/src/ui/mucwin.c
index 8f9aabf8..692d884a 100644
--- a/src/ui/mucwin.c
+++ b/src/ui/mucwin.c
@@ -92,10 +92,12 @@ mucwin_role_and_affiliation_change(ProfMucWin *mucwin, const char *const role, c
 
 
 void
-mucwin_occupant_role_change(const char *const roomjid, const char *const nick, const char *const role,
+mucwin_occupant_role_change(ProfMucWin *mucwin, const char *const nick, const char *const role,
     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, "", "%s's role has been changed to: %s", nick, role);
     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 58f96929..5409fa8f 100644
--- a/src/ui/ui.h
+++ b/src/ui/ui.h
@@ -166,7 +166,7 @@ void mucwin_affiliation_change(ProfMucWin *mucwin, const char *const affiliation
     const char *const reason);
 void mucwin_role_and_affiliation_change(ProfMucWin *mucwin, const char *const role,
     const char *const affiliation, const char *const actor, const char *const reason);
-void mucwin_occupant_role_change(const char *const roomjid, const char *const nick, const char *const role,
+void mucwin_occupant_role_change(ProfMucWin *mucwin, const char *const nick, const char *const role,
     const char *const actor, const char *const reason);
 void mucwin_occupant_affiliation_change(const char *const roomjid, const char *const nick,
     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 3f672c18..907d765a 100644
--- a/tests/unittests/ui/stub_ui.c
+++ b/tests/unittests/ui/stub_ui.c
@@ -197,7 +197,7 @@ void mucwin_affiliation_change(ProfMucWin *mucwin, const char * const affiliatio
     const char * const reason) {}
 void mucwin_role_and_affiliation_change(ProfMucWin *mucwin, const char * const role,
     const char * const affiliation, const char * const actor, const char * const reason) {}
-void mucwin_occupant_role_change(const char * const roomjid, const char * const nick, const char * const role,
+void mucwin_occupant_role_change(ProfMucWin *mucwin, const char * const nick, const char * const role,
     const char * const actor, const char * const reason) {}
 void mucwin_occupant_affiliation_change(const char * const roomjid, const char * const nick, const char * const affiliation,
     const char * const actor, const char * const reason) {}