diff --git a/n2s3_examples/src/main/scala/fr/univ_lille/cristal/emeraude/n2s3/apps/ExampleMnist2.scala b/n2s3_examples/src/main/scala/fr/univ_lille/cristal/emeraude/n2s3/apps/ExampleMnist2.scala
index ba5a24b17316d81ffb9a4efb97b0d987071c6522..f0be7b8f9ced47cbde9d9fb2ab0bb66d24e49437 100644
--- a/n2s3_examples/src/main/scala/fr/univ_lille/cristal/emeraude/n2s3/apps/ExampleMnist2.scala
+++ b/n2s3_examples/src/main/scala/fr/univ_lille/cristal/emeraude/n2s3/apps/ExampleMnist2.scala
@@ -60,7 +60,7 @@ object  ExampleMnist2 extends App {
   var log = true
   var prune = false
   var globalIteration = 1
-  var sizeChunk = 1000
+  var sizeChunk = 60000
 
   implicit val timeout = Config.longTimeout
   alpha = 0.05F
@@ -101,13 +101,13 @@ object  ExampleMnist2 extends App {
 
   val unsupervisedLayer1 = n2s3.createNeuronGroup()
     .setIdentifier("Layer1")
-    .setNumberOfNeurons(20)
+    .setNumberOfNeurons(50)
     .setNeuronModel(LIF, Seq(
       (MembranePotentialThreshold, 15 millivolts)))
   
   val unsupervisedLayer2 = n2s3.createNeuronGroup()
     .setIdentifier("Layer2")
-    .setNumberOfNeurons(10)
+    .setNumberOfNeurons(20)
     .setNeuronModel(LIF, Seq(
       (MembranePotentialThreshold, 5 millivolts)))
 
@@ -219,7 +219,7 @@ object  ExampleMnist2 extends App {
 
     println("Start Testing cropped " + "[" + iteration + "]" + " with " + Ratio)
 
-    benchmarkMonitor = n2s3.createBenchmarkMonitor(unsupervisedLayer1)
+    benchmarkMonitor = n2s3.createBenchmarkMonitor(unsupervisedLayer2)
 
     simTime = simTime + "Test cropped " + iteration