diff --git a/app/views/user_mailer/error_report.html.haml b/app/views/user_mailer/error_report.html.haml
index 7227268..52b82fe 100644
--- a/app/views/user_mailer/error_report.html.haml
+++ b/app/views/user_mailer/error_report.html.haml
@@ -2,7 +2,7 @@
 
 %h2 Error details
 %code.signature{class: "#{@report.source}-signature"}
-  = "#{@report.signature}"
+  = "#{@report.signature.gsub(/\n\s+/, '<br>&nbsp;nbsp;')}".html_safe
 %code.backtrace{class: "#{@report.source}-backtrace"}=@report.backtrace
 
 %h2 Request details