diff --git a/data/collection64.go b/data/collection64.go
index 8db94dc..f12546f 100644
--- a/data/collection64.go
+++ b/data/collection64.go
@@ -1,4 +1,4 @@
-// +build !386, !arm
+// +build amd
 
 package data
 
diff --git a/data/hash64.go b/data/hash64.go
index b562821..37f5e78 100644
--- a/data/hash64.go
+++ b/data/hash64.go
@@ -1,4 +1,4 @@
-// +build !386, !arm
+// +build amd
 
 package data