diff --git a/Projects/AthGeneration/package_filters.txt b/Projects/AthGeneration/package_filters.txt
index 4f3eecfc055d8fc2b706a866619367486ca96829..825fa9f5533ee155f5b626065e03b9a31597916d 100644
--- a/Projects/AthGeneration/package_filters.txt
+++ b/Projects/AthGeneration/package_filters.txt
@@ -52,7 +52,7 @@
 + Database/APR/CollectionBase
 + Database/APR/CollectionUtilities
 + Database/APR/FileCatalog
-#+ Database/APR/ImplicitCollection
++ Database/APR/ImplicitCollection
 + Database/APR/POOLCore 
 + Database/APR/PersistencySvc
 #+ Database/APR/RelationalCollection