diff --git a/event/event_test.go b/event/event_test.go
index 549b302ebe..a26fdabf62 100644
--- a/event/event_test.go
+++ b/event/event_test.go
@@ -29,7 +29,7 @@ func TestSubCloseUnsub(t *testing.T) {
 	// the point of this test is **not** to panic
 	var mux TypeMux
 	mux.Stop()
-	sub := mux.Subscribe(int(0))
+	sub := mux.Subscribe(0)
 	sub.Unsubscribe()
 }
 
diff --git a/event/feed_test.go b/event/feed_test.go
index 1ab211769b..74e8587a87 100644
--- a/event/feed_test.go
+++ b/event/feed_test.go
@@ -28,8 +28,8 @@ import (
 func TestFeedPanics(t *testing.T) {
 	{
 		var f Feed
-		f.Send(int(2))
-		want := feedTypeError{op: "Send", got: reflect.TypeOf(uint64(0)), want: reflect.TypeOf(int(0))}
+		f.Send(2)
+		want := feedTypeError{op: "Send", got: reflect.TypeOf(uint64(0)), want: reflect.TypeOf(0)}
 		if err := checkPanic(want, func() { f.Send(uint64(2)) }); err != nil {
 			t.Error(err)
 		}
@@ -38,14 +38,14 @@ func TestFeedPanics(t *testing.T) {
 		var f Feed
 		ch := make(chan int)
 		f.Subscribe(ch)
-		want := feedTypeError{op: "Send", got: reflect.TypeOf(uint64(0)), want: reflect.TypeOf(int(0))}
+		want := feedTypeError{op: "Send", got: reflect.TypeOf(uint64(0)), want: reflect.TypeOf(0)}
 		if err := checkPanic(want, func() { f.Send(uint64(2)) }); err != nil {
 			t.Error(err)
 		}
 	}
 	{
 		var f Feed
-		f.Send(int(2))
+		f.Send(2)
 		want := feedTypeError{op: "Subscribe", got: reflect.TypeOf(make(chan uint64)), want: reflect.TypeOf(make(chan<- int))}
 		if err := checkPanic(want, func() { f.Subscribe(make(chan uint64)) }); err != nil {
 			t.Error(err)
@@ -59,7 +59,7 @@ func TestFeedPanics(t *testing.T) {
 	}
 	{
 		var f Feed
-		if err := checkPanic(errBadChannel, func() { f.Subscribe(int(0)) }); err != nil {
+		if err := checkPanic(errBadChannel, func() { f.Subscribe(0) }); err != nil {
 			t.Error(err)
 		}
 	}