diff --git a/src/settings/plugins/ifnet/tests/net b/src/settings/plugins/ifnet/tests/net
index e755000238..0eef399a98 100644
--- a/src/settings/plugins/ifnet/tests/net
+++ b/src/settings/plugins/ifnet/tests/net
@@ -35,6 +35,8 @@ config_eth6=("192.168.4.{1..101}/24")
 config_eth7=( "dhcp" )
 auto_eth7="true"
 
+# missing config_eth8
+auto_eth8="true"
 
 config_myxjtu2=("202.117.16.121/24 brd 202.117.16.255")
 routes_myxjtu2=("default via 202.117.16.1")
diff --git a/src/settings/plugins/ifnet/tests/test_all.c b/src/settings/plugins/ifnet/tests/test_all.c
index 1fd1ed1f56..52d9ce2adf 100644
--- a/src/settings/plugins/ifnet/tests/test_all.c
+++ b/src/settings/plugins/ifnet/tests/test_all.c
@@ -356,6 +356,17 @@ test_delete_connection ()
 	unlink (SUP_GEN_NAME);
 }
 
+static void
+test_missing_config ()
+{
+	GError *error = NULL;
+	NMConnection *connection;
+
+	connection = ifnet_update_connection_from_config_block ("eth8", &error);
+	ASSERT (connection == NULL && error != NULL, "get connection",
+	        "get connection should fail with 'Unknown config for eth8'");
+}
+
 static void
 run_all (gboolean run)
 {
@@ -378,6 +389,7 @@ run_all (gboolean run)
 		test_update_connection ();
 		test_add_connection ();
 		test_delete_connection ();
+		test_missing_config ();
 	}
 }