diff --git a/engine/src/main/resources/org/archive/crawler/restlet/profile-crawler-beans.cxml b/engine/src/main/resources/org/archive/crawler/restlet/profile-crawler-beans.cxml
index d5366b7f..b7a08125 100644
--- a/engine/src/main/resources/org/archive/crawler/restlet/profile-crawler-beans.cxml
+++ b/engine/src/main/resources/org/archive/crawler/restlet/profile-crawler-beans.cxml
@@ -666,8 +666,10 @@ http://example.example/example
  <bean id="bdb" 
   class="org.archive.bdb.BdbModule">
   <!-- <property name="dir" value="state" /> -->
-  <!-- <property name="cachePercent" value="60" /> -->
-  <!-- <property name="cacheSize" value="104857600" /> -->
+  <!-- if neither cachePercent or cacheSize are specified (the default), bdb
+       uses its own default of 60% -->
+  <!-- <property name="cachePercent" value="0" /> -->
+  <!-- <property name="cacheSize" value="0" /> -->
   <!-- <property name="useSharedCache" value="true" /> -->
   <!-- <property name="expectedConcurrency" value="25" /> -->
  </bean>