diff --git a/asm/amd64/amd64.go b/asm/amd64/amd64.go
index 4f830a0..564a6af 100644
--- a/asm/amd64/amd64.go
+++ b/asm/amd64/amd64.go
@@ -211,7 +211,9 @@ const (
 	R9
 	R10
 	R11
+)
 
+const (
 	One OperandSize = iota
 	Four
 	Eight