diff --git a/Control/CoWTools/CoWTools/ATLAS_CHECK_THREAD_SAFETY b/Control/CoWTools/CoWTools/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..7dca334ed5e647c046bc76c74b9d6bc9ef08199d
--- /dev/null
+++ b/Control/CoWTools/CoWTools/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+Control/CoWTools