diff --git a/serial_test_derive/src/lib.rs b/serial_test_derive/src/lib.rs
index 5ff5e78..abc4834 100644
--- a/serial_test_derive/src/lib.rs
+++ b/serial_test_derive/src/lib.rs
@@ -779,6 +779,7 @@ mod tests {
     }
 
     #[test]
+    #[cfg(feature = "async")]
     fn test_mod_with_async() {
         init();
         let attrs = proc_macro2::TokenStream::new();