diff --git a/src/macros.rs b/src/macros.rs
index ebef66197c..5473dd3faf 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -53,15 +53,6 @@ macro_rules! ast_enum {
 }
 
 macro_rules! ast_enum_of_structs {
-    (
-        $(#[$enum_attr:meta])*
-        $pub:ident $enum:ident $name:ident #$tag:ident $body:tt
-        $($remaining:tt)*
-    ) => {
-        ast_enum!($(#[$enum_attr])* $pub $enum $name #$tag $body);
-        ast_enum_of_structs_impl!($pub $enum $name $body $($remaining)*);
-    };
-
     (
         $(#[$enum_attr:meta])*
         $pub:ident $enum:ident $name:ident $body:tt