diff --git a/clientv3/clientv3util/example_key_test.go b/clientv3/clientv3util/example_key_test.go
index 94e13a8c5..ed6d0f695 100644
--- a/clientv3/clientv3util/example_key_test.go
+++ b/clientv3/clientv3util/example_key_test.go
@@ -16,7 +16,6 @@ package clientv3util_test
 
 import (
 	"context"
-	"fmt"
 	"log"
 
 	"github.com/coreos/etcd/clientv3"