diff --git a/lib/airbrake-ruby/route_sender.rb b/lib/airbrake-ruby/route_sender.rb
index 155eb5d8..a5e63461 100644
--- a/lib/airbrake-ruby/route_sender.rb
+++ b/lib/airbrake-ruby/route_sender.rb
@@ -142,9 +142,9 @@ def schedule_flush(promise)
           routes = @routes
           @routes = {}
           @thread = nil
-        end
 
-        send(routes, promise)
+          send(routes, promise)
+        end
       end
 
       # Setting a name is needed to test the timer.