diff --git a/mmdet/datasets/__init__.py b/mmdet/datasets/__init__.py
index 2e72022bdade2ae441b05a83810788314f6caf6a..42305538ab17fb845f08dcdd2b747e4b099a624e 100644
--- a/mmdet/datasets/__init__.py
+++ b/mmdet/datasets/__init__.py
@@ -8,5 +8,5 @@ from .repeat_dataset import RepeatDataset
 __all__ = [
     'CustomDataset', 'CocoDataset', 'GroupSampler', 'DistributedGroupSampler',
     'build_dataloader', 'to_tensor', 'random_scale', 'show_ann',
-    'get_dataset', 'ExtraAugmentation', 'ConcatDataset', 'RepeatDataset',
+    'get_dataset', 'ConcatDataset', 'RepeatDataset',
 ]