diff --git a/tester/complex_sip_call_tester.c b/tester/complex_sip_call_tester.c
index 96c10d354..9681e6c88 100644
--- a/tester/complex_sip_call_tester.c
+++ b/tester/complex_sip_call_tester.c
@@ -141,7 +141,7 @@ static void call_with_audio_mline_before_video_in_sdp() {
 
 	if (sipp_out) {
 		BC_ASSERT_TRUE(wait_for(mgr->lc, mgr->lc, &mgr->stat.number_of_LinphoneCallIncomingReceived, 1));
-		call = linphone_call_ref(linphone_core_get_current_call(mgr->lc));
+		call = linphone_core_get_current_call(mgr->lc);
 		BC_ASSERT_PTR_NOT_NULL(call);
 		if (call) {
 			linphone_core_accept_call(mgr->lc, call);
@@ -152,7 +152,6 @@ static void call_with_audio_mline_before_video_in_sdp() {
 			BC_ASSERT_TRUE(linphone_call_log_video_enabled(linphone_call_get_call_log(call)));
 
 			check_rtcp(call);
-			linphone_call_unref(call);
 		}
 
 		BC_ASSERT_TRUE(wait_for(mgr->lc, mgr->lc, &mgr->stat.number_of_LinphoneCallEnd, 1));
@@ -183,7 +182,7 @@ static void call_with_video_mline_before_audio_in_sdp() {
 
 	if (sipp_out) {
 		BC_ASSERT_TRUE(wait_for(mgr->lc, mgr->lc, &mgr->stat.number_of_LinphoneCallIncomingReceived, 1));
-		call = linphone_call_ref(linphone_core_get_current_call(mgr->lc));
+		call = linphone_core_get_current_call(mgr->lc);
 		BC_ASSERT_PTR_NOT_NULL(call);
 		if (call) {
 			linphone_core_accept_call(mgr->lc, call);
@@ -194,7 +193,6 @@ static void call_with_video_mline_before_audio_in_sdp() {
 			BC_ASSERT_TRUE(linphone_call_log_video_enabled(linphone_call_get_call_log(call)));
 
 			check_rtcp(call);
-			linphone_call_unref(call);
 		}
 
 		BC_ASSERT_TRUE(wait_for(mgr->lc, mgr->lc, &mgr->stat.number_of_LinphoneCallEnd, 1));
@@ -225,7 +223,7 @@ static void call_with_multiple_audio_mline_in_sdp() {
 
 	if (sipp_out) {
 		BC_ASSERT_TRUE(wait_for(mgr->lc, mgr->lc, &mgr->stat.number_of_LinphoneCallIncomingReceived, 1));
-		call = linphone_call_ref(linphone_core_get_current_call(mgr->lc));
+		call = linphone_core_get_current_call(mgr->lc);
 		BC_ASSERT_PTR_NOT_NULL(call);
 		if (call) {
 			linphone_core_accept_call(mgr->lc, call);
@@ -236,7 +234,6 @@ static void call_with_multiple_audio_mline_in_sdp() {
 			BC_ASSERT_TRUE(linphone_call_log_video_enabled(linphone_call_get_call_log(call)));
 
 			check_rtcp(call);
-			linphone_call_unref(call);
 		}
 
 		BC_ASSERT_TRUE(wait_for(mgr->lc, mgr->lc, &mgr->stat.number_of_LinphoneCallEnd, 1));
@@ -267,7 +264,7 @@ static void call_with_multiple_video_mline_in_sdp() {
 
 	if (sipp_out) {
 		BC_ASSERT_TRUE(wait_for(mgr->lc, mgr->lc, &mgr->stat.number_of_LinphoneCallIncomingReceived, 1));
-		call = linphone_call_ref(linphone_core_get_current_call(mgr->lc));
+		call = linphone_core_get_current_call(mgr->lc);
 		BC_ASSERT_PTR_NOT_NULL(call);
 		if (call) {
 			linphone_core_accept_call(mgr->lc, call);
@@ -278,7 +275,6 @@ static void call_with_multiple_video_mline_in_sdp() {
 			BC_ASSERT_TRUE(linphone_call_log_video_enabled(linphone_call_get_call_log(call)));
 
 			check_rtcp(call);
-			linphone_call_unref(call);
 		}
 
 		BC_ASSERT_TRUE(wait_for(mgr->lc, mgr->lc, &mgr->stat.number_of_LinphoneCallEnd, 1));