diff --git a/scripts/extra/convert_gt_yolo.py b/scripts/extra/convert_gt_yolo.py
index c08c0b056..4affc5d29 100644
--- a/scripts/extra/convert_gt_yolo.py
+++ b/scripts/extra/convert_gt_yolo.py
@@ -55,11 +55,11 @@ def convert_yolo_coordinates_to_voc(x_c_n, y_c_n, width_n, height_n, img_width,
   image_name = tmp_file.split(".txt",1)[0]
   #print(image_name)
   ## check if image exists
-  for fname in os.listdir('../images'):
+  for fname in os.listdir('../images-optional'):
     if fname.startswith(image_name):
       ## image found
       #print(fname)
-      img = cv2.imread('../images/' + fname)
+      img = cv2.imread('../images-optional/' + fname)
       ## get image width and height
       img_height, img_width = img.shape[:2]
       break