diff --git a/Control/AthenaConfiguration/python/OldFlags2NewFlags.py b/Control/AthenaConfiguration/python/OldFlags2NewFlags.py
index b6e014fcd6f32b9d4886534992c20144e84d8bbf..1d3d3aa89dc8facf8f16c2fd12882835792b46b0 100644
--- a/Control/AthenaConfiguration/python/OldFlags2NewFlags.py
+++ b/Control/AthenaConfiguration/python/OldFlags2NewFlags.py
@@ -43,6 +43,7 @@ def getNewConfigFlags():
     # Concurrency
     ConfigFlags.Concurrency.NumProcs = jobproperties.ConcurrencyFlags.NumProcs()
     ConfigFlags.Concurrency.NumThreads = jobproperties.ConcurrencyFlags.NumThreads()
+    ConfigFlags.Concurrency.NumConcurrentEvents = jobproperties.ConcurrencyFlags.NumConcurrentEvents()
 
     # Let's build a map whose key is new flagname, and whose value is old flagname.
     geom_flag_map = {}