diff --git a/src/_pyawaitable/awaitable.c b/src/_pyawaitable/awaitable.c
index b0c8a77..744c9a6 100644
--- a/src/_pyawaitable/awaitable.c
+++ b/src/_pyawaitable/awaitable.c
@@ -3,6 +3,7 @@
 #include <pyawaitable/backport.h>
 #include <pyawaitable/awaitableobject.h>
 #include <pyawaitable/genwrapper.h>
+#include <pyawaitable/coro.h>
 
 PyDoc_STRVAR(awaitable_doc,
     "Awaitable transport utility for the C API.");