diff --git a/src/pkg/hash/crc32/crc32_generic.go b/src/pkg/hash/crc32/crc32_generic.go
index c3fdcd685c..1c7f806c60 100644
--- a/src/pkg/hash/crc32/crc32_generic.go
+++ b/src/pkg/hash/crc32/crc32_generic.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build 386 arm
+// +build 386 arm power64 power64le
 
 package crc32