diff --git a/src/eynollah/eynollah.py b/src/eynollah/eynollah.py
index 079cf8c..271779f 100644
--- a/src/eynollah/eynollah.py
+++ b/src/eynollah/eynollah.py
@@ -4068,7 +4068,9 @@ class Eynollah:
             for textregion_index_to_del in textline_in_textregion_index_to_del:
                 contours[textregion_index_to_del] = list(np.delete(
                     contours[textregion_index_to_del],
-                    textline_in_textregion_index_to_del[textregion_index_to_del]))
+                    textline_in_textregion_index_to_del[textregion_index_to_del],
+                    # needed so numpy does not flatten the entire result when 0 left
+                    axis=0))
 
             return contours