diff --git a/examples/nas/cream/lib/models/structures/supernet.py b/examples/nas/cream/lib/models/structures/supernet.py
index ea09377eb5..f5a84ae1ea 100644
--- a/examples/nas/cream/lib/models/structures/supernet.py
+++ b/examples/nas/cream/lib/models/structures/supernet.py
@@ -131,12 +131,12 @@ def rand_parameters(self, architecture, meta=False):
                 yield param
 
         if not meta:
-            for layer, layer_arch in zip(self.blocks, architecture):
-                for blocks, arch in zip(layer, layer_arch):
-                    if arch == -1:
+            for choice_blocks, choice_name in zip(self.blocks, architecture):
+                choice_sample = architecture[choice_name]
+                for block, arch in zip(choice_blocks, choice_sample):
+                    if not arch:
                         continue
-                    for name, param in blocks[arch].named_parameters(
-                            recurse=True):
+                    for name, param in block.named_parameters(recurse=True):
                         yield param
 
 
diff --git a/nni/algorithms/nas/pytorch/cream/trainer.py b/nni/algorithms/nas/pytorch/cream/trainer.py
index 2ac9f53a25..50830ce64b 100644
--- a/nni/algorithms/nas/pytorch/cream/trainer.py
+++ b/nni/algorithms/nas/pytorch/cream/trainer.py
@@ -165,7 +165,7 @@ def _update_prioritized_board(self, inputs, teacher_output, outputs, prec1, flop
                 (val_prec1,
                  prec1,
                  flops,
-                 self.current_teacher_arch,
+                 self.current_student_arch,
                  training_data,
                  torch.nn.functional.softmax(
                      features,
@@ -174,8 +174,6 @@ def _update_prioritized_board(self, inputs, teacher_output, outputs, prec1, flop
                 self.prioritized_board, reverse=True)
 
         if len(self.prioritized_board) > self.pool_size:
-            self.prioritized_board = sorted(
-                self.prioritized_board, reverse=True)
             del self.prioritized_board[-1]
 
     # only update student network weights