diff --git a/TargetSpecific.md b/TargetSpecific.md
index 7e6fa73b..3ecea1a7 100644
--- a/TargetSpecific.md
+++ b/TargetSpecific.md
@@ -36,7 +36,7 @@ func sumGeneric(out *[16]byte, m []byte, key *[32]byte) {
 poly1305_amd64.go
 
 ```go
-// +build amd64,!gccgo,!purego
+// +build !gccgo,!purego
 
 package poly1305
 
@@ -47,7 +47,7 @@ func sum(out *[16]byte, m []byte, key *[32]byte)
 poly1305_amd64.s
 
 ```
-// +build amd64,!gccgo,!purego
+// +build !gccgo,!purego
 
 // func sum(out *[16]byte, m []byte, key *[32]byte)
 TEXT ·sum(SB), $0-128