diff --git a/GPT_SoVITS/AR/models/utils.py b/GPT_SoVITS/AR/models/utils.py
index f4b39b9c..cd27552e 100644
--- a/GPT_SoVITS/AR/models/utils.py
+++ b/GPT_SoVITS/AR/models/utils.py
@@ -208,17 +208,17 @@ def make_reject_y(y_o, y_lens):
     bs = len(y_lens)
     reject_y = []
     reject_y_lens = []
-    process_item_idx = True
+    proportion=0.5 # repeat/total
     for b in range(bs):
-        if process_item_idx == True:
+        process_item_idx = torch.rand(1)
+        if process_item_idx < proportion:
             new_y = repeat_P(y_o[b])
             reject_y.append(new_y)
             reject_y_lens.append(len(new_y))
-        elif process_item_idx == False:
+        else:
             new_y = lost_P(y_o[b])
             reject_y.append(new_y)
             reject_y_lens.append(len(new_y))
-        process_item_idx = not process_item_idx
     max_length = max(reject_y_lens)
     for b in range(bs):
         pad_length = max_length - reject_y_lens[b]