diff --git a/run/o2simdefaultdetectorlist.json b/run/o2simdefaultdetectorlist.json
index edac4fc696ba2..697fafcba5872 100644
--- a/run/o2simdefaultdetectorlist.json
+++ b/run/o2simdefaultdetectorlist.json
@@ -54,6 +54,7 @@
     "TRK",
     "FT3",
     "FCT",
+    "TF3",
     "RCH",
     "MI3",
     "ECL",