diff --git a/app/helpers/export_helper.rb b/app/helpers/export_helper.rb
index dc2d4abc3..ece85c304 100644
--- a/app/helpers/export_helper.rb
+++ b/app/helpers/export_helper.rb
@@ -93,7 +93,7 @@ module ExportHelper
             user_time = format_time(t.updated_at)
             user_score = t.score
             user_comment = t.comment
-            w_18 = w_18 + (user_name + " " + user_time + " " + user_score + "\n" + user_comment + "\n")
+            w_18 = w_18 + (user_name + " " + user_time.to_s + " " + user_score.to_s + "\n" + user_comment + "\n")
           end
         else
           w_18 = "--"
@@ -164,7 +164,7 @@ module ExportHelper
             user_time = format_time(t.updated_at)
             user_score = t.score
             user_comment = t.comment
-            w_18 = w_18 + (user_name + " " + user_time + " " + user_score + "\n" + user_comment + "\n")
+            w_18 = w_18 + (user_name + " " + user_time.to_s + " " + user_score.to_s + "\n" + user_comment + "\n")
           end
         else
           w_18 = "--"