diff --git a/lib/acts_as_solr/class_methods.rb b/lib/acts_as_solr/class_methods.rb
index <HASH>..<HASH> 100644
--- a/lib/acts_as_solr/class_methods.rb
+++ b/lib/acts_as_solr/class_methods.rb
@@ -205,7 +205,7 @@ module ActsAsSolr #:nodoc:
     # If a finder block is given, it will be called to retrieve the items to index.
     # This can be very useful for things such as updating based on conditions or
     # using eager loading for indexed associations.
-    def rebuild_solr_index(batch_size=0, &finder)
+    def rebuild_solr_index(batch_size=100, &finder)
       finder ||= lambda { |ar, options| ar.find(:all, options.merge({:order => self.primary_key})) }
       start_time = Time.now
Default to <I> docs at time for rebuild_solr_index