diff --git a/archiva-modules/archiva-base/archiva-repository-admin/archiva-repository-admin-default/src/main/java/org/apache/archiva/admin/repository/runtime/DefaultArchivaRuntimeConfigurationAdmin.java b/archiva-modules/archiva-base/archiva-repository-admin/archiva-repository-admin-default/src/main/java/org/apache/archiva/admin/repository/runtime/DefaultArchivaRuntimeConfigurationAdmin.java
index f9dc0c8ac..c5eef69d0 100644
--- a/archiva-modules/archiva-base/archiva-repository-admin/archiva-repository-admin-default/src/main/java/org/apache/archiva/admin/repository/runtime/DefaultArchivaRuntimeConfigurationAdmin.java
+++ b/archiva-modules/archiva-base/archiva-repository-admin/archiva-repository-admin-default/src/main/java/org/apache/archiva/admin/repository/runtime/DefaultArchivaRuntimeConfigurationAdmin.java
@@ -112,6 +112,7 @@ public class DefaultArchivaRuntimeConfigurationAdmin
                 log.info(
                     "archivaRuntimeConfiguration with empty userManagerImpls so force at least jdo implementation !" );
                 archivaRuntimeConfiguration.getUserManagerImpls().add( "jdo" );
+                updateArchivaRuntimeConfiguration( archivaRuntimeConfiguration );
             }
 
         }