diff --git a/Projects/AthSimulation/package_filters.txt b/Projects/AthSimulation/package_filters.txt
index 717087ee48431922fed2224e5f36c3f75da10df4..b19bcf8326a03de6b1d5fc48fce341db807607a5 100644
--- a/Projects/AthSimulation/package_filters.txt
+++ b/Projects/AthSimulation/package_filters.txt
@@ -124,6 +124,7 @@
 + DetectorDescription/IdDictDetDescrCnv
 + DetectorDescription/IdDictParser
 + DetectorDescription/Identifier
++ DetectorDescription/ReadoutGeometryBase
 + Event/EventAthenaPool
 + Event/EventBookkeeperAthenaPool
 + Event/EventBookkeeperMetaData