Index: libcfa/src/concurrency/iocall.cfa
===================================================================
--- libcfa/src/concurrency/iocall.cfa	(revision 4b84e35cc70a09df095e0ebca35e4f074e690d5b)
+++ libcfa/src/concurrency/iocall.cfa	(revision 82bbaf4035f5c2c4395772f58b84998395b2dca6)
@@ -13,4 +13,6 @@
 // Update Count     :
 //
+
+#include "bits/defs.hfa"
 
 //=============================================================================================