diff --git a/app/models/project.rb b/app/models/project.rb
index 82073c0..00f9eec 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -38,7 +38,7 @@ class Project
 
   def duration
     if !self.send('period_start_date').nil? or !self.send('period_end_date').nil?
-      date = (self.send('period_start_date').strftime('%Y.%m.%d') rescue "")+' ~ '+(self.send('period_end_date').strftime('%Y.%m.%d') rescue I18n.t('personal_project.up_to_today'))
+      date = (self.send('period_start_date').strftime('%Y.%m') rescue "")+' ~ '+(self.send('period_end_date').strftime('%Y.%m') rescue I18n.t('personal_project.up_to_today'))
     else
       date = ""
     end