diff --git a/bps_test.go b/bps_test.go
index 25e6a96..6365f46 100644
--- a/bps_test.go
+++ b/bps_test.go
@@ -21,9 +21,12 @@ func TestSimple(t *testing.T) {
 }
 
 func TestBadResolution(t *testing.T) {
-	_, err := New(1 * time.Hour)
-	if err == nil {
-		t.Fatal("expected an error, got nil")
+	var i uint
+	for i = 0; i < minResolution; i++ {
+		_, err := NewPrecise(1*time.Second, i)
+		if err == nil {
+			t.Fatalf("expected an error, got nil for %d", i)
+		}
 	}
 }