diff --git a/pandas/core/groupby/ops.py b/pandas/core/groupby/ops.py
index 6dcbedfa112bb..7391190b5f192 100644
--- a/pandas/core/groupby/ops.py
+++ b/pandas/core/groupby/ops.py
@@ -7,7 +7,6 @@
 """
 
 import collections
-import copy
 
 import numpy as np