diff --git a/src/ast2/mod.rs b/src/ast2/mod.rs
index a1da2e8..8a3a39d 100644
--- a/src/ast2/mod.rs
+++ b/src/ast2/mod.rs
@@ -282,7 +282,7 @@ enum ExpandedData {
 }
 
 impl ExpandedData {
-    fn from_none(data: Data) -> Self {
+    fn from_none() -> Self {
         Self::None
     }
     fn from_error(data: Data) -> Self {
@@ -383,7 +383,7 @@ impl From<(Tag, Data)> for ExpandedData {
             Tag::InternedType | Tag::StructDecl => Self::from_intern(data),
             Tag::PointerType | Tag::IfElseExpr => Self::from_index_and_extra_offset(data),
             Tag::Error => Self::from_error(data),
-            Tag::ReturnStmt | Tag::Undefined => Self::from_none(data),
+            Tag::ReturnStmt | Tag::Undefined => Self::from_none(),
         }
     }
 }