diff --git a/imblearn/combine/smote_enn.py b/imblearn/combine/smote_enn.py
index 70b6b27bc..2f78666f2 100644
--- a/imblearn/combine/smote_enn.py
+++ b/imblearn/combine/smote_enn.py
@@ -116,7 +116,6 @@ def __init__(self, ratio='auto', random_state=None,
         self.kind_enn = kind_enn
         self.n_jobs = n_jobs
         self.kwargs = kwargs
-        from collections import Counter
         self.sm = SMOTE(ratio=self.ratio, random_state=self.random_state,
                         k=self.k, m=self.m, out_step=self.out_step,
                         kind=self.kind_smote, n_jobs=self.n_jobs,