diff --git a/src/event/server_events.c b/src/event/server_events.c
index d1e8380b..e9b756e3 100644
--- a/src/event/server_events.c
+++ b/src/event/server_events.c
@@ -658,8 +658,9 @@ sv_ev_muc_occupant_online(const char *const room, const char *const nick, const
     // presence updated
     if (updated) {
         char *muc_status_pref = prefs_get_string(PREF_STATUSES_MUC);
-        if (g_strcmp0(muc_status_pref, "all") == 0) {
-            mucwin_occupant_presence(room, nick, show, status);
+        ProfMucWin *mucwin = wins_get_muc(room);
+        if (mucwin && (g_strcmp0(muc_status_pref, "all") == 0)) {
+            mucwin_occupant_presence(mucwin, nick, show, status);
         }
         prefs_free_string(muc_status_pref);
         occupantswin_occupants(room);
diff --git a/src/ui/mucwin.c b/src/ui/mucwin.c
index b7d41800..2051d8a6 100644
--- a/src/ui/mucwin.c
+++ b/src/ui/mucwin.c
@@ -304,15 +304,13 @@ mucwin_occupant_online(ProfMucWin *mucwin, const char *const nick, const char *c
 }
 
 void
-mucwin_occupant_presence(const char *const roomjid, const char *const nick,
+mucwin_occupant_presence(ProfMucWin *mucwin, const char *const nick,
     const char *const show, const char *const status)
 {
-    ProfWin *window = (ProfWin*)wins_get_muc(roomjid);
-    if (window == NULL) {
-        log_error("Received presence for room participant %s, but no window open for %s.", nick, roomjid);
-    } else {
-        win_show_status_string(window, nick, show, status, NULL, "++", "online");
-    }
+    assert(mucwin != NULL);
+
+    ProfWin *window = (ProfWin*)mucwin;
+    win_show_status_string(window, nick, show, status, NULL, "++", "online");
 }
 
 void
diff --git a/src/ui/ui.h b/src/ui/ui.h
index 25212f27..6790cd51 100644
--- a/src/ui/ui.h
+++ b/src/ui/ui.h
@@ -193,7 +193,7 @@ void mucwin_occupant_online(ProfMucWin *mucwin, const char *const nick, const ch
     const char *const affiliation, const char *const show, const char *const status);
 void mucwin_occupant_nick_change(const char *const roomjid, const char *const old_nick, const char *const nick);
 void mucwin_nick_change(const char *const roomjid, const char *const nick);
-void mucwin_occupant_presence(const char *const roomjid, const char *const nick, const char *const show,
+void mucwin_occupant_presence(ProfMucWin *mucwin, const char *const nick, const char *const show,
     const char *const status);
 void mucwin_update_occupants(const char *const roomjid);
 void mucwin_show_occupants(const char *const roomjid);
diff --git a/tests/unittests/ui/stub_ui.c b/tests/unittests/ui/stub_ui.c
index 375368ec..93adc4a9 100644
--- a/tests/unittests/ui/stub_ui.c
+++ b/tests/unittests/ui/stub_ui.c
@@ -233,8 +233,8 @@ void mucwin_occupant_online(ProfMucWin *mucwin, const char * const nick, const c
 void mucwin_occupant_nick_change(const char * const roomjid,
     const char * const old_nick, const char * const nick) {}
 void mucwin_nick_change(const char * const roomjid, const char * const nick) {}
-void mucwin_occupant_presence(const char * const roomjid,
-    const char * const nick, const char * const show, const char * const status) {}
+void mucwin_occupant_presence(ProfMucWin *mucwin, const char * const nick, const char * const show,
+    const char * const status) {}
 void mucwin_update_occupants(const char * const roomjid) {}
 void mucwin_show_occupants(const char * const roomjid) {}
 void mucwin_hide_occupants(const char * const roomjid) {}