diff --git a/OBIA/OBIABase.py b/OBIA/OBIABase.py
index 964b01c3fd601ba072fd16f3a01aabee76b77b98..f4ea65c74a4ad192150269311dc05caa420d2489 100644
--- a/OBIA/OBIABase.py
+++ b/OBIA/OBIABase.py
@@ -388,7 +388,7 @@ class OBIABase:
         # ATTENTION: works if "labels" is sorted (as provided by get_reference_...)
         true_c[labels] = self.ref_db.loc[self.ref_db['orig_label'].isin(labels),class_field].to_numpy(dtype=int)
         true = true_c[support]
-        return pred[pred>0], true[pred>0]
+        return true[pred>0], pred[pred>0]
 
     def tiled_objects(self, on_ref=False):
         assert(self.tiles is not None)