Add README and license files to project structure

1 files changed, 1 insertions, 1 deletions

diff --git a/mingling_macros/src/chain.rs b/mingling_macros/src/chain.rs
index 9ef4ae0..ad74c5c 100644
--- a/mingling_macros/src/chain.rs
+++ b/mingling_macros/src/chain.rs
@@ -64,7 +64,7 @@ pub fn chain_attr(item: TokenStream) -> TokenStream {
     let input_fn = parse_macro_input!(item as ItemFn);
 
     // Validate the function
-    if !input_fn.sig.asyncness.is_some() {
+    if input_fn.sig.asyncness.is_none() {
         return syn::Error::new(input_fn.sig.span(), "Chain function must be async")
             .to_compile_error()
             .into();