diff --git a/lib/flipper/adapters/poll/poller.rb b/lib/flipper/adapters/poll/poller.rb
index 34b0f4f0d..819cf82b1 100644
--- a/lib/flipper/adapters/poll/poller.rb
+++ b/lib/flipper/adapters/poll/poller.rb
@@ -19,7 +19,7 @@ def self.get(key, options = {})
         end
 
         def self.reset
-          instances.clear
+          instances.each {|_,poller| poller.stop }.clear
         end
 
         def initialize(options = {})