Index: libcfa/src/concurrency/mutex.cfa
===================================================================
--- libcfa/src/concurrency/mutex.cfa	(revision 58b6d1b3b8da710a22441043f60cb988a2c2e56d)
+++ libcfa/src/concurrency/mutex.cfa	(revision 335d81f9b08d35c3b2d0a6b92a2c05d61d2cd368)
@@ -15,4 +15,6 @@
 // Update Count     : 0
 //
+
+#define __cforall_thread__
 
 #include "mutex.hfa"