Index: libcfa/src/concurrency/io/types.hfa
===================================================================
--- libcfa/src/concurrency/io/types.hfa	(revision 57b36754852fad4ae8e509a553d6d510ed886b7b)
+++ libcfa/src/concurrency/io/types.hfa	(revision 54565371c3b9261036f76efc5fd039c32cc8a5ae)
@@ -179,7 +179,7 @@
 
 static inline {
-	bool fulfil( io_future_t & this, __s32 result ) {
+	$thread * fulfil( io_future_t & this, __s32 result, bool do_unpark = true ) {
 		this.result = result;
-		return fulfil(this.self);
+		return fulfil(this.self, do_unpark);
 	}