diff --git a/lib/bugsnag/integrations/sidekiq.rb b/lib/bugsnag/integrations/sidekiq.rb
index 5aded3540..5566c8ee3 100644
--- a/lib/bugsnag/integrations/sidekiq.rb
+++ b/lib/bugsnag/integrations/sidekiq.rb
@@ -31,7 +31,7 @@ def call(worker, msg, queue)
     end
 
     def self.notify(exception)
-      return unless [Interrupt, SystemExit, SignalException].include? exception.class
+      return if [Interrupt, SystemExit, SignalException].include? exception.class
       Bugsnag.notify(exception, true) do |report|
         report.severity = "error"
         report.severity_reason = {
diff --git a/spec/integrations/sidekiq_spec.rb b/spec/integrations/sidekiq_spec.rb
index 433de4a47..b83352883 100644
--- a/spec/integrations/sidekiq_spec.rb
+++ b/spec/integrations/sidekiq_spec.rb
@@ -15,7 +15,9 @@ def perform(value)
     before do
       Sidekiq::Testing.inline!
       stub_const('Sidekiq::VERSION', '2.0.0')
-      Bugsnag::Sidekiq.configure_server(Sidekiq::Testing)
+      Sidekiq::Testing.server_middleware do |chain|
+        chain.add ::Bugsnag::Sidekiq
+      end
     end
 
     it "works" do