diff --git a/sziszapangma/integration/service_core/embedding/embedding_base_processor.py b/sziszapangma/integration/service_core/embedding/embedding_base_processor.py
index 6f1734958114f5f647a7f0373ddb312b86f3cbeb..7c10db1fd05518d5e150a30531d048d08409d7b5 100644
--- a/sziszapangma/integration/service_core/embedding/embedding_base_processor.py
+++ b/sziszapangma/integration/service_core/embedding/embedding_base_processor.py
@@ -28,7 +28,7 @@ class EmbeddingBaseProcessor(ABC):
 
     def process_embeddings(self, language: str):
         words = request.json
-        if isinstance(words, List[str].__class__):
+        if not isinstance(words, List) or not all(isinstance(elem, str) for elem in words):
             print(f"words: {words}")
             raise Exception("Incorrect body")
         return jsonify(