Index: src/libcfa/concurrency/thread
===================================================================
--- src/libcfa/concurrency/thread	(revision de6319f37ab741ed2ba4232a93ee62c240717bcd)
+++ src/libcfa/concurrency/thread	(revision 9c7317c74ae2d8f5e46b57412386e80bb635b264)
@@ -20,4 +20,5 @@
 
 #include "coroutine"
+#include "kernel"
 #include "monitor"