Index: tests/concurrent/thread.cfa
===================================================================
--- tests/concurrent/thread.cfa	(revision 924c5ce5360c4901589fa3cf23f54516811fb7ff)
+++ tests/concurrent/thread.cfa	(revision ff1240f10287352eeff13ba3dd7f93557383c489)
@@ -1,4 +1,5 @@
 #include <fstream.hfa>
 #include <kernel.hfa>
+#include <locks.hfa>
 #include <stdlib.hfa>
 #include <thread.hfa>