diff --git a/ThirdParty/SmartThreadPool/WorkItem.cs b/ThirdParty/SmartThreadPool/WorkItem.cs
index d0c0524d10..12668b03e2 100644
--- a/ThirdParty/SmartThreadPool/WorkItem.cs
+++ b/ThirdParty/SmartThreadPool/WorkItem.cs
@@ -1027,7 +1027,10 @@ namespace Amib.Threading.Internal
             lock (this)
             {
                 if(currentThread != null)
+                {
                     currentThread.Abort();
+                    currentThread.Join();
+                }
             }
         }
     }