diff --git a/lib/cucumber/formatter/html.rb b/lib/cucumber/formatter/html.rb
index 708ccaea31..a0523d324e 100644
--- a/lib/cucumber/formatter/html.rb
+++ b/lib/cucumber/formatter/html.rb
@@ -562,7 +562,7 @@ def format_exception(exception)
       end
 
       def backtrace_line(line)
-        line.gsub(/\A([^:]*\.(?:rb|feature|haml)):(\d*).*\z/) do
+        line.gsub(/^([^:]*\.(?:rb|feature|haml)):(\d*).*$/) do
           if ENV['TM_PROJECT_DIRECTORY']
             "<a href=\"txmt://open?url=file://#{File.expand_path($1)}&line=#{$2}\">#{$1}:#{$2}</a> "
           else