diff --git a/MarketData/MarketDataLib/Cache/LocalPriceCache.cs b/MarketData/MarketDataLib/Cache/LocalPriceCache.cs
index d1477ca..7275584 100755
--- a/MarketData/MarketDataLib/Cache/LocalPriceCache.cs
+++ b/MarketData/MarketDataLib/Cache/LocalPriceCache.cs
@@ -387,6 +387,7 @@ namespace MarketData.Cache
       while (threadRun)
       {
         Thread.Sleep(quantumInterval);
+        if(!threadRun)break;
         quantums += quantumInterval;
         if (quantums > cacheCycle)
         {