diff --git a/app/controllers/repositories_controller.rb b/app/controllers/repositories_controller.rb
index 41b44b6cd..303e4a213 100644
--- a/app/controllers/repositories_controller.rb
+++ b/app/controllers/repositories_controller.rb
@@ -705,7 +705,7 @@ update
     @date_from = @date_to << 6
     @date_from = Date.civil(@date_from.year, @date_from.month, @date_from.day)
     commits_by_author = Changeset.count(:group => :committer, :conditions => ["#{Changeset.table_name}.repository_id = ? AND #{Changeset.table_name}.commit_date BETWEEN ? AND ?", repository.id, @date_from, @date_to])
-    commits_by_author = commits_by_author.to_a.sort! {|x, y| x.last <=> y.last}.last(25)
+    commits_by_author = commits_by_author.to_a.sort! {|x, y| x.last <=> y.last}.last(40)
     all_author = []
     commits_by_author.each do |cba|
       all_author << cba.first
@@ -734,10 +734,6 @@ update
         :graph_title => l(:label_author_code_six_month),
         :show_graph_title => true
     )
-    commits_data1 = [0]*12
-    graph.add_data(
-        :data => commits_data1,
-    )
     graph.add_data(
         :data => commits_data,
         :title => l(:lable_revision_code_count)