Index: libcfa/src/concurrency/io/types.hfa
===================================================================
--- libcfa/src/concurrency/io/types.hfa	(revision 454f478e4ba5abab2a66dcf28ad9efa8a5d7f313)
+++ libcfa/src/concurrency/io/types.hfa	(revision c08c3cfa1e4a6930d362550049713d2d3fd7ed43)
@@ -21,4 +21,5 @@
 }
 
+#include "bits/locks.hfa"
 #include "kernel/fwd.hfa"