diff --git a/tests/embedders/test_dp_sbert.py b/tests/embedders/test_dp_sbert.py
index 1d3e67b..e1cd4d2 100644
--- a/tests/embedders/test_dp_sbert.py
+++ b/tests/embedders/test_dp_sbert.py
@@ -19,7 +19,7 @@ def test_encode(self):
         assert embeddings.shape == (OUTPUT_DIM,)
 
     def test_encode_with_prompt(self):
-        embeddings = self.model.encode("任意のテキスト", prompt="プロンプト")
+        embeddings = self.model.encode("任意のテキスト", prefix="プロンプト")
         assert isinstance(embeddings, np.ndarray)
         assert embeddings.shape == (OUTPUT_DIM,)