diff --git a/crypto/bn256/cloudflare/gfp_decl.go b/crypto/bn256/cloudflare/gfp_decl.go
index fdea5c11a5..1954d14a4a 100644
--- a/crypto/bn256/cloudflare/gfp_decl.go
+++ b/crypto/bn256/cloudflare/gfp_decl.go
@@ -1,3 +1,4 @@
+//go:build (amd64 && !generic) || (arm64 && !generic)
 // +build amd64,!generic arm64,!generic
 
 package bn256
@@ -9,10 +10,10 @@ import (
 	"golang.org/x/sys/cpu"
 )
 
-//nolint:varcheck
+//nolint:varcheck,unused,deadcode
 var hasBMI2 = cpu.X86.HasBMI2
 
-// go:noescape
+//go:noescape
 func gfpNeg(c, a *gfP)
 
 //go:noescape