diff --git a/ppocr/data/det/dataset_traversal.py b/ppocr/data/det/dataset_traversal.py
index c52c9455a627e77bdb0225bb754fce8495e016d9..3bd931857866e79d04f1fd70d07a368d744dbf84 100755
--- a/ppocr/data/det/dataset_traversal.py
+++ b/ppocr/data/det/dataset_traversal.py
@@ -82,7 +82,7 @@ class EvalTestReader(object):
                 for line in lines:
                     img_name = line.decode().strip("\n").split("\t")[0]
                     img_path = os.path.join(img_set_dir, img_name)
-                    img_list.append([img_path])
+                    img_list.append(img_path)
         else:
             img_path = self.params['single_img_path']
             img_list = get_image_file_list(img_path)