diff --git a/src/cmd/compile/internal/ir/mknode.go b/src/cmd/compile/internal/ir/mknode.go
index 2c007f93f1..978b2de5a5 100644
--- a/src/cmd/compile/internal/ir/mknode.go
+++ b/src/cmd/compile/internal/ir/mknode.go
@@ -141,7 +141,7 @@ func forNodeFields(typName string, typ *types.Struct, f func(name string, is fun
 		}
 		switch typName {
 		case "Func":
-			if v.Name() != "body" {
+			if strings.ToLower(strings.TrimSuffix(v.Name(), "_")) != "body" {
 				continue
 			}
 		case "Name", "Pack":