Index: libcfa/src/concurrency/io/setup.cfa
===================================================================
--- libcfa/src/concurrency/io/setup.cfa	(revision e8738389410418fb54ab3de5094d7dfde4c07aa7)
+++ libcfa/src/concurrency/io/setup.cfa	(revision 231b18f299ecfc1eaab7aaa615d70064e3240d08)
@@ -276,5 +276,5 @@
 			}
 		} else {
-			unpark( &thrd );
+			post( this.thrd.sem );
 		}