diff --git a/test/layers/test_sampler.py b/test/layers/test_sampler.py
index 65a6bfbe6..c2fb69018 100644
--- a/test/layers/test_sampler.py
+++ b/test/layers/test_sampler.py
@@ -56,6 +56,7 @@ def _create_default_sampling_metadata(
         min_dec_lens=paddle.full(shape=[batch_size, 1], fill_value=min_seq_len, dtype="int64"),
         bad_words_token_ids=paddle.full(shape=[batch_size], fill_value=-1, dtype="int64"),
         eos_token_ids=paddle.full(shape=[batch_size], fill_value=-2, dtype="int64"),
+        min_p=paddle.randn([batch_size]),
     )
     return fake_sampling_metadata