diff --git a/src/pkg/net/fd_windows.go b/src/pkg/net/fd_windows.go
index f3e5761c87..9b91eb398c 100644
--- a/src/pkg/net/fd_windows.go
+++ b/src/pkg/net/fd_windows.go
@@ -11,7 +11,6 @@ import (
 	"syscall"
 	"time"
 	"unsafe"
-	"runtime"
 )
 
 // IO completion result parameters.