diff --git a/GPy/kern/src/coregionalize.py b/GPy/kern/src/coregionalize.py
index d5111c3b..41ddf841 100644
--- a/GPy/kern/src/coregionalize.py
+++ b/GPy/kern/src/coregionalize.py
@@ -134,3 +134,18 @@ class Coregionalize(Kern):
 
     def gradients_X_diag(self, dL_dKdiag, X):
         return np.zeros(X.shape)
+
+    def to_dict(self):
+        """
+        Convert the object into a json serializable dictionary.
+
+        Note: It uses the private method _save_to_input_dict of the parent.
+
+        :return dict: json serializable dictionary containing the needed information to instantiate the object
+        """
+
+        input_dict = super(Coregionalize, self)._save_to_input_dict()
+        input_dict["class"] = "GPy.kern.Coregionalize"
+        input_dict["W"] = self.W.values.tolist()
+        input_dict["kappa"] = self.kappa.values.tolist()
+        return input_dict