diff --git a/src/twomartens/masterthesis/data.py b/src/twomartens/masterthesis/data.py
index 609fb3c..03937ec 100644
--- a/src/twomartens/masterthesis/data.py
+++ b/src/twomartens/masterthesis/data.py
@@ -413,11 +413,9 @@ def prepare_scenenet_val(data_path: str, protobuf_path: str) -> Tuple[List[List[
                 instance_local[instance_local != instance_id] = 0
                 instance_local[instance_local == instance_id] = 1
                 coordinates = ndimage.find_objects(instance_local)
-                if coordinates is None:  # the current instance was not in this frame
+                if coordinates is None or not coordinates:  # the current instance was not in this frame
                     continue
                 else:
-                    print(instance_local)
-                    print(coordinates)
                     coordinates = coordinates[0]  # extract the coords of the one object
                 
                 x = coordinates[0]