diff --git a/cmd_test.go b/cmd_test.go
index 4922239..a0d4c6b 100644
--- a/cmd_test.go
+++ b/cmd_test.go
@@ -166,10 +166,17 @@ func TestMultiplePeriodicCommands(t *testing.T) {
 	defer b.Close()
 
 	entries := b.cron.Entries()
+
+	sort.Slice(entries, func(i, j int) bool {
+		return entries[i].ID < entries[j].ID
+	})
+
+	t.Logf("%+v", entries)
 	if len(entries) != 2 {
 		t.Fatal("Should have 2 cron job entries")
 	}
 	if entries[0].Next.Hour() != 8 {
+
 		t.Fatal("First cron job should be scheduled for 8am")
 	}
 	if entries[1].Next.Hour() != 12 {
@@ -691,20 +698,28 @@ func TestCmdV3WithoutSpecifyingChannel(t *testing.T) {
 
 func TestMessageReceiveFilter(t *testing.T) {
 	reset()
+
+	// register a command
 	hello := func(c *Cmd) (string, error) { return "after receive filter: " + c.Message, nil }
-	RegisterCommand("cmd", "", "", hello)
+	RegisterCommand("hello", "", "", hello)
 
-	modified := func(cd *ChannelData, msg *Message, sender *User, cmd *Cmd) error {
+	// filter function that modifies the message before command interpretation
+	var modified filterMessageReceiveFuncV1
+	modified = func(cd *ChannelData, msg *Message, sender *User, cmd *Cmd) error {
 		cmd.Message = "modified"
 		return nil
 	}
-	errored := func(cd *ChannelData, msg *Message, sender *User, cmd *Cmd) error { return errors.New("error") }
+
+	// filter function that errors before command interpretation
+	var errored filterMessageReceiveFuncV1
+	errored = func(cd *ChannelData, msg *Message, sender *User, cmd *Cmd) error { return errors.New("error") }
 
 	RegisterMessageReceiveFilter("modified", modified)
 	RegisterMessageReceiveFilter("errored", errored)
 
 	b := newBot()
-	b.MessageReceived(&ChannelData{Channel: "#go-bot"}, &Message{Text: "!cmd"}, &User{Nick: "user"})
+
+	b.MessageReceived(&ChannelData{Channel: "#go-bot"}, &Message{Text: "!hello"}, &User{Nick: "user"})
 
 	waitMessages(t, 1, 1)