diff --git a/cherrypick/lib/src/global_cycle_detector.dart b/cherrypick/lib/src/global_cycle_detector.dart
index e16e96c..ba58afb 100644
--- a/cherrypick/lib/src/global_cycle_detector.dart
+++ b/cherrypick/lib/src/global_cycle_detector.dart
@@ -12,9 +12,7 @@
 //
 
 import 'dart:collection';
-import 'dart:math';
 import 'package:cherrypick/cherrypick.dart';
-import 'package:cherrypick/src/cycle_detector.dart';
 import 'package:cherrypick/src/log_format.dart';