diff --git a/src/tests/test-route-manager.c b/src/tests/test-route-manager.c
index ab1faeb9fa..1e7f02c92f 100644
--- a/src/tests/test-route-manager.c
+++ b/src/tests/test-route-manager.c
@@ -245,7 +245,7 @@ test_ip4 (test_fixture *fixture, gconstpointer user_data)
 	};
 
 	setup_dev0_ip4 (fixture->ifindex0);
-	g_test_expect_message ("NetworkManager", G_LOG_LEVEL_WARNING, "*error adding*");
+	g_test_expect_message ("NetworkManager", G_LOG_LEVEL_WARNING, "*error adding 8.0.0.0/8 via 6.6.6.2 dev nm-test-device1 *");
 	setup_dev1_ip4 (fixture->ifindex1);
 	g_test_assert_expected_messages ();
 
@@ -258,7 +258,7 @@ test_ip4 (test_fixture *fixture, gconstpointer user_data)
 	g_array_free (routes, TRUE);
 
 	setup_dev1_ip4 (fixture->ifindex1);
-	g_test_expect_message ("NetworkManager", G_LOG_LEVEL_WARNING, "*error adding*");
+	g_test_expect_message ("NetworkManager", G_LOG_LEVEL_WARNING, "*error adding 8.0.0.0/8 via 6.6.6.2 dev nm-test-device1 *");
 	setup_dev0_ip4 (fixture->ifindex0);
 	g_test_assert_expected_messages ();
 
@@ -268,7 +268,7 @@ test_ip4 (test_fixture *fixture, gconstpointer user_data)
 	nmtst_platform_ip4_routes_equal ((NMPlatformIP4Route *) routes->data, state1, routes->len);
 	g_array_free (routes, TRUE);
 
-	g_test_expect_message ("NetworkManager", G_LOG_LEVEL_WARNING, "*error adding*");
+	g_test_expect_message ("NetworkManager", G_LOG_LEVEL_WARNING, "*error adding 8.0.0.0/8 via 6.6.6.2 dev nm-test-device1 *");
 	update_dev0_ip4 (fixture->ifindex0);
 	g_test_assert_expected_messages ();
 
@@ -582,7 +582,7 @@ test_ip6 (test_fixture *fixture, gconstpointer user_data)
 	};
 
 	setup_dev0_ip6 (fixture->ifindex0);
-	g_test_expect_message ("NetworkManager", G_LOG_LEVEL_WARNING, "*error adding*");
+	g_test_expect_message ("NetworkManager", G_LOG_LEVEL_WARNING, "*error adding 2001:db8:d34d::/64 via 2001:db8:8086::2 dev nm-test-device1 *");
 	setup_dev1_ip6 (fixture->ifindex1);
 	g_test_assert_expected_messages ();
 
@@ -596,7 +596,7 @@ test_ip6 (test_fixture *fixture, gconstpointer user_data)
 	g_array_free (routes, TRUE);
 
 	setup_dev1_ip6 (fixture->ifindex1);
-	g_test_expect_message ("NetworkManager", G_LOG_LEVEL_WARNING, "*error adding*");
+	g_test_expect_message ("NetworkManager", G_LOG_LEVEL_WARNING, "*error adding 2001:db8:d34d::/64 via 2001:db8:8086::2 dev nm-test-device1 *");
 	setup_dev0_ip6 (fixture->ifindex0);
 	g_test_assert_expected_messages ();
 
@@ -606,7 +606,7 @@ test_ip6 (test_fixture *fixture, gconstpointer user_data)
 	nmtst_platform_ip6_routes_equal ((NMPlatformIP6Route *) routes->data, state1, routes->len);
 	g_array_free (routes, TRUE);
 
-	g_test_expect_message ("NetworkManager", G_LOG_LEVEL_WARNING, "*error adding*");
+	g_test_expect_message ("NetworkManager", G_LOG_LEVEL_WARNING, "*error adding 2001:db8:d34d::/64 via 2001:db8:8086::2 dev nm-test-device1 *");
 	update_dev0_ip6 (fixture->ifindex0);
 	g_test_assert_expected_messages ();