diff --git a/file_utils.py b/file_utils.py
index 94ab040..94ad5b6 100644
--- a/file_utils.py
+++ b/file_utils.py
@@ -40,7 +40,7 @@ def saveResult(img_file, img, boxes, dirname='./result/', verticals=None, texts=
         Return:
             None
         """
-        img = np.array(img)
+        img = np.ascontiguousarray(img, dtype=np.uint8)
 
         # make result file list
         filename, file_ext = os.path.splitext(os.path.basename(img_file))