diff --git a/solr-conf/4.x/solrconfig.xml b/solr-conf/4.x/solrconfig.xml
index d408253..468aaef 100644
--- a/solr-conf/4.x/solrconfig.xml
+++ b/solr-conf/4.x/solrconfig.xml
@@ -136,7 +136,7 @@
 
     <useCompoundFile>false</useCompoundFile>
 
-    <mergeFactor>4</mergeFactor>
+    <mergeFactor>10</mergeFactor>
     <!-- Sets the amount of RAM that may be used by Lucene indexing
          for buffering added documents and deletions before they are
          flushed to the Directory.  -->
@@ -204,10 +204,6 @@
       -->
     <!-- <termIndexInterval>256</termIndexInterval> -->
 
-    <useCompoundFile>false</useCompoundFile>
-    <ramBufferSizeMB>32</ramBufferSizeMB>
-    <mergeFactor>10</mergeFactor>
-
     <!-- Unlock On Startup
 
          If true, unlock any held write or commit locks on startup.