diff --git a/codegen/src/function.rs b/codegen/src/function.rs
index 3f593c7c..e276cfa8 100644
--- a/codegen/src/function.rs
+++ b/codegen/src/function.rs
@@ -651,7 +651,8 @@ impl ExportedFn {
         let return_span = self
             .return_type()
             .map(|r| r.span())
-            .unwrap_or_else(Span::call_site);
+            .unwrap_or_else(Span::call_site)
+            .resolved_at(Span::call_site());
         if self.params.return_raw.is_some() {
             quote_spanned! { return_span =>
                 pub #dynamic_signature {
@@ -834,7 +835,8 @@ impl ExportedFn {
         let return_span = self
             .return_type()
             .map(|r| r.span())
-            .unwrap_or_else(Span::call_site);
+            .unwrap_or_else(Span::call_site)
+            .resolved_at(Span::call_site());
         let return_expr = if self.params.return_raw.is_none() {
             quote_spanned! { return_span =>
                 Ok(Dynamic::from(#sig_name(#(#unpack_exprs),*)))