Index: libcfa/src/concurrency/io/setup.cfa
===================================================================
--- libcfa/src/concurrency/io/setup.cfa	(revision daefe93df0da625f84188e00b080a708ff2281f2)
+++ libcfa/src/concurrency/io/setup.cfa	(revision 3c80ccc84498117773bedfc351f42492113bbde8)
@@ -276,5 +276,5 @@
 			}
 		} else {
-			unpark( &thrd );
+			post( this.thrd.sem );
 		}