diff --git a/app/views/admin/surveys/export.xlsx.axlsx b/app/views/admin/surveys/export.xlsx.axlsx
index 4ba168a..f557e67 100644
--- a/app/views/admin/surveys/export.xlsx.axlsx
+++ b/app/views/admin/surveys/export.xlsx.axlsx
@@ -68,7 +68,7 @@ wb.add_worksheet(name: remove_illegal_utf8(@survey.title[0..15])) do |sheet|
 
       else
         if answer[question.id.to_s]
-          answer_row << answer[question.id.to_s]
+          answer_row << remove_illegal_utf8(answer[question.id.to_s])
         else
           answer_row << ''
         end
@@ -77,9 +77,9 @@ wb.add_worksheet(name: remove_illegal_utf8(@survey.title[0..15])) do |sheet|
       if question.custom_option
         if !answer[question.id.to_s].blank?
           if answer[question.id.to_s].class == Array
-            answer_row << (answer[question.id.to_s] - options).join
+            answer_row << remove_illegal_utf8((answer[question.id.to_s] - options).join)
           elsif answer[question.id.to_s].class == String
-            answer_row << ([answer[question.id.to_s]] - options).join
+            answer_row << remove_illegal_utf8(([answer[question.id.to_s]] - options).join)
           end
         else
           answer_row << ''