diff --git a/client.go b/client.go
index 281e9566..9c33c1ff 100644
--- a/client.go
+++ b/client.go
@@ -23,6 +23,7 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/anacrolix/missinggo/perf"
 	"github.com/anacrolix/sync"
 	"github.com/anacrolix/utp"
 	"github.com/bradfitz/iter"