Index: libcfa/src/concurrency/channel.hfa
===================================================================
--- libcfa/src/concurrency/channel.hfa	(revision 5e0bba5fda3d7351cd7d4b5ad75b54d7c9f4387e)
+++ libcfa/src/concurrency/channel.hfa	(revision ca995e3090a31786ce34129347ad66e6dd17c3a9)
@@ -28,4 +28,5 @@
     unlock( lock );
     park();
+    __atomic_thread_fence( __ATOMIC_SEQ_CST );
     return sn.extra == 0p;
 }