diff --git a/tests/ui/stub_ui.c b/tests/ui/stub_ui.c
index 51b82d42..fe650921 100644
--- a/tests/ui/stub_ui.c
+++ b/tests/ui/stub_ui.c
@@ -457,6 +457,7 @@ void cons_outtype_setting(void) {}
 void cons_intype_setting(void) {}
 void cons_gone_setting(void) {}
 void cons_history_setting(void) {}
+void cons_carbons_setting(void) {}
 void cons_log_setting(void) {}
 void cons_chlog_setting(void) {}
 void cons_grlog_setting(void) {}
diff --git a/tests/xmpp/stub_xmpp.c b/tests/xmpp/stub_xmpp.c
index 281857f0..02c0acf8 100644
--- a/tests/xmpp/stub_xmpp.c
+++ b/tests/xmpp/stub_xmpp.c
@@ -119,6 +119,8 @@ gboolean presence_sub_request_exists(const char * const bare_jid)
 }
 
 // iq functions
+void iq_disable_carbons();
+void iq_enable_carbons();
 void iq_send_software_version(const char * const fulljid) {}
 
 void iq_room_list_request(gchar *conferencejid)