Index: tests/concurrent/thread.cfa
===================================================================
--- tests/concurrent/thread.cfa	(revision 924c5ce5360c4901589fa3cf23f54516811fb7ff)
+++ tests/concurrent/thread.cfa	(revision a344425c053dcb16f1c4e1dac8247370ebbcca21)
@@ -1,4 +1,5 @@
 #include <fstream.hfa>
 #include <kernel.hfa>
+#include <locks.hfa>
 #include <stdlib.hfa>
 #include <thread.hfa>