1 files changed, 3 insertions, 7 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/exception_wrapper.rb b/actionpack/lib/action_dispatch/middleware/exception_wrapper.rb
index 5fd984cd07..3b61824cc9 100644
--- a/actionpack/lib/action_dispatch/middleware/exception_wrapper.rb
+++ b/actionpack/lib/action_dispatch/middleware/exception_wrapper.rb
@@ -37,7 +37,7 @@ module ActionDispatch
       @backtrace_cleaner = backtrace_cleaner
       @exception = original_exception(exception)
 
-      expand_backtrace if exception.is_a?(SyntaxError) || exception.try(:original_exception).try(:is_a?, SyntaxError)
+      expand_backtrace if exception.is_a?(SyntaxError) || exception.cause.is_a?(SyntaxError)
     end
 
     def rescue_template
@@ -106,17 +106,13 @@ module ActionDispatch
     end
 
     def original_exception(exception)
-      if registered_original_exception?(exception)
-        exception.original_exception
+      if @@rescue_responses.has_key?(exception.cause.class.name)
+        exception.cause
       else
         exception
       end
     end
 
-    def registered_original_exception?(exception)
-      exception.respond_to?(:original_exception) && @@rescue_responses.has_key?(exception.original_exception.class.name)
-    end
-
     def clean_backtrace(*args)
       if backtrace_cleaner
         backtrace_cleaner.clean(backtrace, *args)