diff --git a/app/mailers/feedback_mailer.rb b/app/mailers/feedback_mailer.rb
index 4b86cf3f8..50ddcffe0 100644
--- a/app/mailers/feedback_mailer.rb
+++ b/app/mailers/feedback_mailer.rb
@@ -24,7 +24,7 @@ class FeedbackMailer < ActionMailer::Base
     res << subject
     res << affix(FBM_CONFIG['subject_postfixes'])
     # WOODOO magic. Change all space sequences to one space than remove trailing spaces.
-    res.gsub(/\s+/, ' ').gsub(/^\s|\s$/, '')
+    res = res.gsub(/\s+/, ' ').strip!
     res
   end