diff --git a/Trigger/TrigDataAccess/TrigSerializeTP/TrigSerializeTP/ATLAS_CHECK_THREAD_SAFETY b/Trigger/TrigDataAccess/TrigSerializeTP/TrigSerializeTP/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..0e42c95d0296143414ac84c056aa9ee9b50914b5
--- /dev/null
+++ b/Trigger/TrigDataAccess/TrigSerializeTP/TrigSerializeTP/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+Trigger/TrigDataAccess/TrigSerializeTP