diff --git a/perlmod-macro/src/attribs.rs b/perlmod-macro/src/attribs.rs
index e5e396c..6370352 100644
--- a/perlmod-macro/src/attribs.rs
+++ b/perlmod-macro/src/attribs.rs
@@ -126,7 +126,7 @@ pub struct FunctionAttrs {
     pub perl_name: Option<Ident>,
     pub xs_name: Option<Ident>,
     pub raw_return: bool,
-    pub cv_variable: Option<Ident>,
+    //pub cv_variable: Option<Ident>,
     pub prototype: Option<String>,
     pub serialize_error: bool,
     pub errno: bool,