diff --git a/TileCalorimeter/TileDetDescr/TileDetDescr/ATLAS_CHECK_THREAD_SAFETY b/TileCalorimeter/TileDetDescr/TileDetDescr/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..01d4c820a357e5ef8379324621d552365684608d
--- /dev/null
+++ b/TileCalorimeter/TileDetDescr/TileDetDescr/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+TileCalorimeter/TileDetDescr