diff --git a/GPy/models/one_vs_all_classification.py b/GPy/models/one_vs_all_classification.py
index 2a0af892..10457d75 100644
--- a/GPy/models/one_vs_all_classification.py
+++ b/GPy/models/one_vs_all_classification.py
@@ -40,4 +40,5 @@ class OneVsAllClassification(object):
 
             m = SparseGPClassification(X,Ynew,kernel=kernel,Y_metadata=Y_metadata)
             m.optimize(messages=messages)
+            stop
             self.results[yj] = m.predict(X)