Index: libcfa/src/concurrency/channel.hfa
===================================================================
--- libcfa/src/concurrency/channel.hfa	(revision 37ceccbccec1df04d3e17e8c2deb88d47c942720)
+++ libcfa/src/concurrency/channel.hfa	(revision cbbfba90c3b1a0275f1674f8286fdc599ed15bfb)
@@ -28,4 +28,5 @@
     unlock( lock );
     park();
+    __atomic_thread_fence( __ATOMIC_SEQ_CST );
     return sn.extra == 0p;
 }