diff --git a/tester/register_tester.c b/tester/register_tester.c
index 6e5f3a104..dc53de9fa 100644
--- a/tester/register_tester.c
+++ b/tester/register_tester.c
@@ -1246,14 +1246,14 @@ static void multi_devices_register_with_gruu(void) {
 	linphone_core_add_supported_tag(marie->lc,"gruu");
 	linphone_core_manager_start(marie,TRUE);
 	LinphoneProxyConfig *cfg=linphone_core_get_default_proxy_config(marie->lc);
-	
+
 	if(cfg) {
 		const LinphoneAddress *addr = linphone_proxy_config_get_contact(cfg);
 		BC_ASSERT_PTR_NOT_NULL(addr);
 		BC_ASSERT_STRING_EQUAL(linphone_address_get_domain(addr),linphone_proxy_config_get_domain(cfg));
 		BC_ASSERT_TRUE(linphone_address_has_uri_param(addr,"gr"));
 	}
-	
+
 	linphone_core_set_network_reachable(marie->lc,FALSE); /*to make sure first instance is not unregistered*/
 	linphone_core_manager_destroy(marie);
 
@@ -1268,7 +1268,7 @@ static void multi_devices_register_with_gruu(void) {
 		BC_ASSERT_STRING_EQUAL(linphone_address_get_domain(addr),linphone_proxy_config_get_domain(cfg));
 		BC_ASSERT_TRUE(linphone_address_has_uri_param(addr,"gr"));
 	}
-	
+
 	linphone_core_manager_destroy(marie);
 }
 
@@ -1280,7 +1280,7 @@ static void register_without_regid(void) {
 	if(cfg) {
 		const LinphoneAddress *addr = linphone_proxy_config_get_contact(cfg);
 		BC_ASSERT_PTR_NOT_NULL(addr);
-		BC_ASSERT_PTR_NOT_NULL(strstr(linphone_address_as_string_uri_only(addr), "regid"));
+		BC_ASSERT_PTR_NULL(strstr(linphone_address_as_string_uri_only(addr), "regid"));
 	}
 	linphone_core_manager_destroy(marie);
 }