diff --git a/include/ucoro/awaitable.hpp b/include/ucoro/awaitable.hpp
index d641709..415663d 100644
--- a/include/ucoro/awaitable.hpp
+++ b/include/ucoro/awaitable.hpp
@@ -61,9 +61,6 @@ namespace ucoro
 	template<typename T>
 	struct awaitable_promise;
 
-	template<typename T, typename CallbackFunction>
-	struct ExecutorAwaiter;
-
 	template<typename T, typename CallbackFunction>
 	struct CallbackAwaiter;