diff --git a/MindElec/mindelec/geometry/geometry_base.py b/MindElec/mindelec/geometry/geometry_base.py
index 2717ccf8823c63acd9efecef3323129cf9b48c94..1a7006e23121959c3ef31907d228521f774b597d 100755
--- a/MindElec/mindelec/geometry/geometry_base.py
+++ b/MindElec/mindelec/geometry/geometry_base.py
@@ -107,8 +107,10 @@ class Geometry:
     Args:
         name (str): name of the geometry.
         dim (int): number of dimensions.
-        coord_min (Union[list[int, float], tuple[int, float], numpy.ndarray]): minimal coordinate of the geometry.
-        coord_max (Union[list[int, float], tuple[int, float], numpy.ndarray]): maximal coordinate of the geometry.
+        coord_min (Union[int, float, list[int, float], tuple[int, float], numpy.ndarray]): minimal
+            coordinate of the geometry.
+        coord_max (Union[int, float, list[int, float], tuple[int, float], numpy.ndarray]): maximal
+            coordinate of the geometry.
         dtype (numpy.dtype): Data type of sampled point data type. Default: numpy.float32.
         sampling_config (SamplingConfig): sampling configuration. Default: None