2 files changed, 9 insertions, 11 deletions
diff --git a/activesupport/lib/active_support/notifications.rb b/activesupport/lib/active_support/notifications.rb
index 555c0ad1d3..a7a6112b0f 100644
--- a/activesupport/lib/active_support/notifications.rb
+++ b/activesupport/lib/active_support/notifications.rb
@@ -231,18 +231,16 @@ module ActiveSupport
       #   ActiveSupport::Notifications.subscribe(/render/) do |event|
       #     @event = event
       #   end
-      def subscribe(*args, &block)
-        pattern, callback = *args
-        notifier.subscribe(pattern, callback, false, &block)
+      def subscribe(pattern = nil, callback = nil, &block)
+        notifier.subscribe(pattern, callback, monotonic: false, &block)
       end
 
-      def monotonic_subscribe(*args, &block)
-        pattern, callback = *args
-        notifier.subscribe(pattern, callback, true, &block)
+      def monotonic_subscribe(pattern = nil, callback = nil, &block)
+        notifier.subscribe(pattern, callback, monotonic: true, &block)
       end
 
-      def subscribed(callback, pattern, monotonic: false, &block)
-        subscriber = notifier.subscribe(pattern, callback, monotonic)
+      def subscribed(callback, pattern = nil, monotonic: false, &block)
+        subscriber = notifier.subscribe(pattern, callback, monotonic: monotonic)
         yield
       ensure
         unsubscribe(subscriber)
diff --git a/activesupport/lib/active_support/notifications/fanout.rb b/activesupport/lib/active_support/notifications/fanout.rb
index c37bec4ee5..aa602329ec 100644
--- a/activesupport/lib/active_support/notifications/fanout.rb
+++ b/activesupport/lib/active_support/notifications/fanout.rb
@@ -20,8 +20,8 @@ module ActiveSupport
         super
       end
 
-      def subscribe(pattern = nil, callable = nil, monotonic = false, &block)
-        subscriber = Subscribers.new(monotonic, pattern, callable || block)
+      def subscribe(pattern = nil, callable = nil, monotonic: false, &block)
+        subscriber = Subscribers.new(pattern, callable || block, monotonic)
         synchronize do
           if String === pattern
             @string_subscribers[pattern] << subscriber
@@ -84,7 +84,7 @@ module ActiveSupport
       end
 
       module Subscribers # :nodoc:
-        def self.new(monotonic, pattern, listener)
+        def self.new(pattern, listener, monotonic)
           subscriber_class = monotonic ? MonotonicTimed : Timed
 
           if listener.respond_to?(:start) && listener.respond_to?(:finish)