diff --git a/hbs2-peer/app/RPC2.hs b/hbs2-peer/app/RPC2.hs
index 86aa7350..ceeaea25 100644
--- a/hbs2-peer/app/RPC2.hs
+++ b/hbs2-peer/app/RPC2.hs
@@ -234,7 +234,6 @@ runBurstMachine BurstMachine{..} = do
 
         atomically do
           e <- headDef bu0 . Map.elems <$> readTVar _rates
-          writeTVar _rates mempty
           nrates <- readTVar _rates <&> take 100 . Map.toList
           writeTVar _rates (Map.fromList nrates)
           modifyTVar _buMaxReal (max e)