diff --git a/robot/arlo.py b/robot/arlo.py
index 9f824e7..9ca7bb4 100644
--- a/robot/arlo.py
+++ b/robot/arlo.py
@@ -110,7 +110,7 @@ class Arlo():
             parameters=aruco_params
         )
 
-        return zip(corners, ids) if corners is not None else []
+        return list(zip(corners, ids)) if corners is not None else []
 
     def draw_arucos(self, image, bounding_boxes):
         for bounding, n in bounding_boxes: