diff --git a/app/controllers/repositories_controller.rb b/app/controllers/repositories_controller.rb
index 714dfed..a69d3dc 100644
--- a/app/controllers/repositories_controller.rb
+++ b/app/controllers/repositories_controller.rb
@@ -255,22 +255,31 @@ private
 
   def graph_commits_per_author(repository)
     commits_by_author = repository.changesets.count(:all, :group => :committer)
-    commits_by_author.to_a.sort! {|x, y| x.last <=> y.last}
 
     changes_by_author = repository.changes.count(:all, :group => :committer)
     h = changes_by_author.inject({}) {|o, i| o[i.first] = i.last; o}
     
-    fields = commits_by_author.collect {|r| r.first}
-    commits_data = commits_by_author.collect {|r| r.last}
-    changes_data = commits_by_author.collect {|r| h[r.first] || 0}
-    
+    # Aggregate data
+    commits_data_aggregate = Hash.new(0)
+    changes_data_aggregate = Hash.new(0)
+
+    for commit in commits_by_author
+      name = commit.first.gsub(%r{<.+@.+>}, '')
+      commits_data_aggregate[name] += commit.last
+      changes_data_aggregate[name] += h[commit.first] || 0
+    end
+
+    # Sort fields
+    commits_data_array = commits_data_aggregate.sort {|x, y| x.last <=> y.last}
+
+    fields = commits_data_array.collect {|r| r.first}
+    commits_data = commits_data_array.collect {|r| r.last}
+    changes_data = fields.collect {|f| changes_data_aggregate[f]}
+   
     fields = fields + [""]*(10 - fields.length) if fields.length<10
     commits_data = commits_data + [0]*(10 - commits_data.length) if commits_data.length<10
     changes_data = changes_data + [0]*(10 - changes_data.length) if changes_data.length<10
     
-    # Remove email adress in usernames
-    fields = fields.collect {|c| c.gsub(%r{<.+@.+>}, '') }
-    
     graph = SVG::Graph::BarHorizontal.new(
       :height => 400,
       :width => 800,