diff --git a/src/Numerics/Threading/ThreadQueue.cs b/src/Numerics/Threading/ThreadQueue.cs
index 348a91ca..41320536 100644
--- a/src/Numerics/Threading/ThreadQueue.cs
+++ b/src/Numerics/Threading/ThreadQueue.cs
@@ -78,7 +78,11 @@ namespace MathNet.Numerics.Threading
         /// </summary>
         static ThreadQueue()
         {
+            #if SILVERLIGHT
+            Start(1);
+            #else
             Start(Environment.ProcessorCount);
+            #endif
         }
 
         /// <summary>