diff --git a/register/memory_test.go b/register/memory_test.go
index aa5c2d33..75b2c798 100644
--- a/register/memory_test.go
+++ b/register/memory_test.go
@@ -3,7 +3,6 @@ package register
 import (
 	"context"
 	"fmt"
-	"os"
 	"sync"
 	"testing"
 	"time"