diff --git a/serde_codegen/src/de.rs b/serde_codegen/src/de.rs
index 8eb69970..8c1aace0 100644
--- a/serde_codegen/src/de.rs
+++ b/serde_codegen/src/de.rs
@@ -717,6 +717,7 @@ fn deserialize_struct_visitor(
     let field_exprs = fields.iter()
         .map(|field| field.attrs.name().deserialize_name())
         .collect();
+    let field_names = field_exprs.clone();
 
     let field_visitor = deserialize_field_visitor(
         field_exprs,
@@ -732,10 +733,6 @@ fn deserialize_struct_visitor(
         item_attrs,
     );
 
-    let field_names = fields.iter().map(|field| {
-        field.ident.clone().expect("struct contains unnamed field").to_string()
-    });
-
     let fields_stmt = quote! {
         const FIELDS: &'static [&'static str] = &[ #(#field_names),* ];
     };