diff --git a/src/Brunet/Collections/TimeBasedCache.cs b/src/Brunet/Collections/TimeBasedCache.cs
index b281651d9..f6e2a73d4 100644
--- a/src/Brunet/Collections/TimeBasedCache.cs
+++ b/src/Brunet/Collections/TimeBasedCache.cs
@@ -161,7 +161,7 @@ public bool TryGetValue(K key, out V value, out bool update)
     /// <summary> Must stop the Recycling thread.</summary>
     public void Stop()
     {
-      if(System.Threading.Interlocked.Exchange(ref _stopped, 1) == 0) {
+      if(System.Threading.Interlocked.Exchange(ref _stopped, 1) == 1) {
         return;
       }