diff --git a/cmd/sf/longpath_windows.go b/cmd/sf/longpath_windows.go
index ee010fca5..a7d6fdbd4 100644
--- a/cmd/sf/longpath_windows.go
+++ b/cmd/sf/longpath_windows.go
@@ -18,6 +18,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"time"
 )
 
 // longpath code derived from https://github.com/docker/docker/tree/master/pkg/longpath