diff --git a/cpu/cpu_linux_mips64x.go b/cpu/cpu_linux_mips64x.go
index eb24e50..5a41890 100644
--- a/cpu/cpu_linux_mips64x.go
+++ b/cpu/cpu_linux_mips64x.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build linux
 // +build mips64 mips64le
 
 package cpu