diff --git a/src/runtime/cgo/cgo.go b/src/runtime/cgo/cgo.go
index b21458fb7e9..241a821e4f0 100644
--- a/src/runtime/cgo/cgo.go
+++ b/src/runtime/cgo/cgo.go
@@ -20,7 +20,6 @@ package cgo
 #cgo !android,linux LDFLAGS: -lpthread
 #cgo netbsd LDFLAGS: -lpthread
 #cgo openbsd LDFLAGS: -lpthread
-#cgo windows LDFLAGS: -mthreads
 
 #cgo CFLAGS: -Wall -Werror