diff --git a/langchain/vectorstores/opensearch_vector_search.py b/langchain/vectorstores/opensearch_vector_search.py
index 9218ffaafd..06c855eb6d 100644
--- a/langchain/vectorstores/opensearch_vector_search.py
+++ b/langchain/vectorstores/opensearch_vector_search.py
@@ -243,7 +243,7 @@ class OpenSearchVectorSearch(VectorStore):
             List of ids from adding the texts into the vectorstore.
         """
         embeddings = [
-            self.embedding_function.embed_documents(list(text))[0] for text in texts
+            self.embedding_function.embed_documents([text])[0] for text in texts
         ]
         _validate_embeddings_and_bulk_size(len(embeddings), bulk_size)
         return _bulk_ingest_embeddings(