diff --git a/internal/cfg/cfg.go b/internal/cfg/cfg.go
index 815994b..4cb3fbd 100644
--- a/internal/cfg/cfg.go
+++ b/internal/cfg/cfg.go
@@ -33,6 +33,7 @@ const KnownEnv = `
 	GCCGO
 	GO111MODULE
 	GO386
+	GOAMD64
 	GOARCH
 	GOARM
 	GOBIN