diff --git a/ThirdParty/SmartThreadPool/SmartThreadPool.cs b/ThirdParty/SmartThreadPool/SmartThreadPool.cs
index bd52f6245a..8c9d38bce5 100644
--- a/ThirdParty/SmartThreadPool/SmartThreadPool.cs
+++ b/ThirdParty/SmartThreadPool/SmartThreadPool.cs
@@ -535,17 +535,10 @@ namespace Amib.Threading
                 // Process until shutdown.
                 while(!_shutdown)
                 {
-                    // Update the last time this thread was seen alive.
-                    // It's good for debugging.
-                    _workerThreads[Thread.CurrentThread] = DateTime.Now;
-
+                    
                     // Wait for a work item, shutdown, or timeout
                     WorkItem workItem = Dequeue();
 
-                    // Update the last time this thread was seen alive.
-                    // It's good for debugging.
-                    _workerThreads[Thread.CurrentThread] = DateTime.Now;
-
                     // On timeout or shut down.
                     if (null == workItem)
                     {
@@ -554,6 +547,10 @@ namespace Amib.Threading
                         {
                             lock(_workerThreads.SyncRoot)
                             {
+                                // Update the last time this thread was seen alive.
+                                // It's good for debugging.
+                                _workerThreads[Thread.CurrentThread] = DateTime.Now;
+
                                 if (_workerThreads.Count > _stpStartInfo.MinWorkerThreads)
                                 {
                                     // Inform that the thread is quiting and then quit.