diff --git a/lib/action_cable/subscription_adapter/solid_cable.rb b/lib/action_cable/subscription_adapter/solid_cable.rb
index 2c476e9..15d3d02 100644
--- a/lib/action_cable/subscription_adapter/solid_cable.rb
+++ b/lib/action_cable/subscription_adapter/solid_cable.rb
@@ -53,6 +53,7 @@ def initialize(event_loop)
             @critical = Concurrent::Semaphore.new(0)
 
             @reconnect_attempt = 0
+            @last_id = last_message_id
 
             @thread = Thread.new do
               Thread.current.name = "solid_cable_listener"
@@ -113,12 +114,7 @@ def invoke_callback(*)
 
           private
             attr_reader :event_loop, :thread
-            attr_writer :last_id
-            attr_accessor :reconnect_attempt
-
-            def last_id
-              @last_id ||= last_message_id
-            end
+            attr_accessor :last_id, :reconnect_attempt
 
             def last_message_id
               ::SolidCable::Message.maximum(:id) || 0
diff --git a/test/lib/action_cable/subscription_adapter/solid_cable_test.rb b/test/lib/action_cable/subscription_adapter/solid_cable_test.rb
index 73c2bf9..dac6e2d 100644
--- a/test/lib/action_cable/subscription_adapter/solid_cable_test.rb
+++ b/test/lib/action_cable/subscription_adapter/solid_cable_test.rb
@@ -212,7 +212,6 @@ def subscribe_as_queue(channel, adapter = @rx_adapter)
       subscribed = Concurrent::Event.new
       adapter.subscribe(channel, callback, proc { subscribed.set })
       subscribed.wait(WAIT_WHEN_EXPECTING_EVENT)
-      sleep WAIT_WHEN_EXPECTING_EVENT
       assert_predicate subscribed, :set?
 
       yield queue