1 files changed, 5 insertions, 5 deletions
diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index f4140f21f5..3d3299afb3 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -168,7 +168,7 @@ module ActionDispatch
           end
 
           def normalize_conditions!
-            @conditions.merge!(:path_info => path)
+            @conditions[:path_info] = path
 
             constraints.each do |key, condition|
               unless segment_keys.include?(key) || key == :controller
@@ -176,12 +176,13 @@ module ActionDispatch
               end
             end
 
-            @conditions[:required_defaults] = []
+            required_defaults = []
             options.each do |key, required_default|
               unless segment_keys.include?(key) || IGNORE_OPTIONS.include?(key) || Regexp === required_default
-                @conditions[:required_defaults] << key
+                required_defaults << key
               end
             end
+            @conditions[:required_defaults] = required_defaults
 
             via_all = options.delete(:via) if options[:via] == :all
 
@@ -195,8 +196,7 @@ module ActionDispatch
             end
 
             if via = options[:via]
-              list = Array(via).map { |m| m.to_s.dasherize.upcase }
-              @conditions.merge!(:request_method => list)
+              @conditions[:request_method] = Array(via).map { |m| m.to_s.dasherize.upcase }
             end
           end