diff --git a/deepdoc/vision/ocr.py b/deepdoc/vision/ocr.py
index fb42fba27..d9f472aa1 100644
--- a/deepdoc/vision/ocr.py
+++ b/deepdoc/vision/ocr.py
@@ -351,7 +351,8 @@ class TextRecognizer:
     def close(self):
         # close session and release manually
         logging.info('Close TextRecognizer.')
-        del self.predictor
+        if hasattr(self, "predictor"):
+            del self.predictor
         gc.collect()
 
     def __call__(self, img_list):
@@ -490,7 +491,8 @@ class TextDetector:
 
     def close(self):
         logging.info("Close TextDetector.")
-        del self.predictor
+        if hasattr(self, "predictor"):
+            del self.predictor
         gc.collect()
 
     def __call__(self, img):
diff --git a/deepdoc/vision/recognizer.py b/deepdoc/vision/recognizer.py
index a829c1cd3..65995a579 100644
--- a/deepdoc/vision/recognizer.py
+++ b/deepdoc/vision/recognizer.py
@@ -408,7 +408,8 @@ class Recognizer:
 
     def close(self):
         logging.info("Close recognizer.")
-        del self.ort_sess
+        if hasattr(self, "ort_sess"):
+            del self.ort_sess
         gc.collect()
 
     def __call__(self, image_list, thr=0.7, batch_size=16):