diff --git a/lib/cucumber/formatter/backtrace_filter.rb b/lib/cucumber/formatter/backtrace_filter.rb
index b4dafa4b2..fe338ebb3 100644
--- a/lib/cucumber/formatter/backtrace_filter.rb
+++ b/lib/cucumber/formatter/backtrace_filter.rb
@@ -43,8 +43,10 @@ def exception
 
         if ::ENV['CUCUMBER_TRUNCATE_OUTPUT']
           # Strip off file locations
+          regexp = /(.*):in (?:'|`)/
           filtered = filtered.map do |line|
-            line =~ /(.*):in ('|`)/ ? Regexp.last_match(1) : line
+            match = regexp.match(line)
+            match ? match[1] : line
           end
         end