Index: tests/concurrent/thread.cfa
===================================================================
--- tests/concurrent/thread.cfa	(revision fd54fef231baeeb0016103bf19cc8e6d87287faf)
+++ tests/concurrent/thread.cfa	(revision 12b4ab4fd4899665bc1cafa544e60e949b59533b)
@@ -1,4 +1,5 @@
 #include <fstream.hfa>
 #include <kernel.hfa>
+#include <locks.hfa>
 #include <stdlib.hfa>
 #include <thread.hfa>