diff --git a/coreapi/linphonecall.c b/coreapi/linphonecall.c
index 73a0b979d..03eca35c8 100644
--- a/coreapi/linphonecall.c
+++ b/coreapi/linphonecall.c
@@ -4249,6 +4249,7 @@ void linphone_call_handle_stream_events(LinphoneCall *call, int stream_index){
 		} else if (evt == ORTP_EVENT_RTT_CHARACTER_RECEIVED) {
 			LinphoneChatRoom * chat_room = linphone_call_get_chat_room(call);
 			linphone_core_real_time_text_received(call->core, chat_room, evd->info.received_rtt_character, call);
+			linphone_call_unref(chat_room->call); // linphone_call_get_chat_room(call) ref the call
 		}
 		ortp_event_destroy(ev);
 	}
diff --git a/tester/message_tester.c b/tester/message_tester.c
index 2f2dd6b48..36ea7773e 100644
--- a/tester/message_tester.c
+++ b/tester/message_tester.c
@@ -1300,12 +1300,13 @@ static void real_time_text_message(void) {
 	if (pauline_chat_room) {
 		const char* message = "Lorem Ipsum Belledonnum Communicatum";
 		int i;
-		LinphoneChatMessage*  rtt_message = linphone_chat_room_create_message(pauline_chat_room,NULL);
+		LinphoneChatMessage* rtt_message = linphone_chat_room_create_message(pauline_chat_room,NULL);
+		LinphoneChatRoom *marie_chat_room = linphone_call_get_chat_room(marie_call);
 
 		for (i = 0; i < strlen(message); i++) {
-			linphone_chat_message_put_char(rtt_message,message[i]);
+			linphone_chat_message_put_char(rtt_message, message[i]);
 			BC_ASSERT_TRUE(wait_for_until(pauline->lc, marie->lc, &marie->stat.number_of_LinphoneIsComposingActiveReceived, i+1, 1000));
-			BC_ASSERT_EQUAL(linphone_chat_room_get_char(linphone_call_get_chat_room(marie_call)), message[i], char, "%c");
+			BC_ASSERT_EQUAL(linphone_chat_room_get_char(marie_chat_room), message[i], char, "%c");
 		}
 
 		/*Commit the message, triggers a NEW LINE in T.140 */