diff --git a/activesupport/lib/active_support/core_ext/exception.rb b/activesupport/lib/active_support/core_ext/exception.rb
index 2e3965117b..ec15a915be 100644
--- a/activesupport/lib/active_support/core_ext/exception.rb
+++ b/activesupport/lib/active_support/core_ext/exception.rb
@@ -28,6 +28,6 @@ class Exception # :nodoc:
   end
   
   def framework_backtrace
-    clean_backtrace.select {|line| line =~ FrameworkRegexp}
+    clean_backtrace.grep FrameworkRegexp
   end
-end
\ No newline at end of file
+end