Index: libcfa/src/concurrency/io/setup.cfa
===================================================================
--- libcfa/src/concurrency/io/setup.cfa	(revision 58688bf200d46086a322a50fdc47de274d1a04ae)
+++ libcfa/src/concurrency/io/setup.cfa	(revision 7d651a66289ee32aed2ad5c25b33322822f36702)
@@ -276,5 +276,5 @@
 			}
 		} else {
-			unpark( &thrd );
+			post( this.thrd.sem );
 		}