diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index 0a6cd63b566f4..4dc2fc086e268 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -726,22 +726,17 @@ def match(*args)
           path = options.delete(:path)
           action = args.first
 
-          if action.is_a?(Symbol)
+          if action && action.to_s =~ /^[\w_]+$/
             path = path_for_action(action, path)
-            options[:to] ||= action
-            options[:as]   = name_for_action(action, options[:as])
+            options[:action] ||= action
+            options[:as] = name_for_action(action, options[:as])
 
             with_exclusive_scope do
               return super(path, options)
             end
           elsif resource_method_scope?
             path = path_for_custom_action
-            if action =~ /^[a-zA-Z][_a-zA-Z0-9]*$/
-              options[:action] ||= action
-              options[:as] = name_for_action(action, options[:as])
-            else
-              options[:as] = name_for_action(options[:as]) if options[:as]
-            end
+            options[:as] = name_for_action(options[:as]) if options[:as]
             args.push(options)
 
             with_exclusive_scope do
diff --git a/actionpack/test/dispatch/routing_test.rb b/actionpack/test/dispatch/routing_test.rb
index f4a839e0973d0..a84c4d2d1806c 100644
--- a/actionpack/test/dispatch/routing_test.rb
+++ b/actionpack/test/dispatch/routing_test.rb
@@ -658,7 +658,7 @@ def test_bookmarks
 
       get '/bookmark/remove'
       assert_equal 'bookmarks#destroy', @response.body
-      assert_equal '/bookmark/remove', bookmark_remove_path
+      assert_equal '/bookmark/remove', remove_bookmark_path
     end
   end
 
@@ -1192,7 +1192,7 @@ def test_match_shorthand_with_no_scope
 
   def test_match_shorthand_inside_namespace
     with_test_routes do
-      assert_equal '/account/shorthand', account_shorthand_path
+      assert_equal '/account/shorthand', shorthand_account_path
       get '/account/shorthand'
       assert_equal 'account#shorthand', @response.body
     end
@@ -1244,7 +1244,7 @@ def test_redirect_with_port
 
   def test_normalize_namespaced_matches
     with_test_routes do
-      assert_equal '/account/description', account_description_path
+      assert_equal '/account/description', description_account_path
 
       get '/account/description'
       assert_equal 'account#description', @response.body