diff --git a/kmeans_test.go b/kmeans_test.go
index 2356bf7..74333f6 100644
--- a/kmeans_test.go
+++ b/kmeans_test.go
@@ -5,12 +5,12 @@ import (
 )
 
 func TestNewErrors(t *testing.T) {
-	_, err := NewWithOptions(0.00, false)
+	_, err := NewWithOptions(0.00, nil)
 	if err == nil {
 		t.Errorf("Expected invalid options to return an error, got nil")
 	}
 
-	_, err = NewWithOptions(1.00, false)
+	_, err = NewWithOptions(1.00, nil)
 	if err == nil {
 		t.Errorf("Expected invalid options to return an error, got nil")
 	}