diff --git a/libs/cobalt/include/boost/cobalt/concepts.hpp b/libs/cobalt/include/boost/cobalt/concepts.hpp
index d49f2ec..a9bdb80 100644
--- a/libs/cobalt/include/boost/cobalt/concepts.hpp
+++ b/libs/cobalt/include/boost/cobalt/concepts.hpp
@@ -62,7 +62,7 @@ struct enable_awaitables
 template <typename T>
 concept with_get_executor = requires (T& t)
 {
-  {t.get_executor()} -> asio::execution::executor;
+  t.get_executor();
 };