diff --git a/simba/mixins/feature_extraction_mixin.py b/simba/mixins/feature_extraction_mixin.py
index c3ad33aa7..223f80220 100644
--- a/simba/mixins/feature_extraction_mixin.py
+++ b/simba/mixins/feature_extraction_mixin.py
@@ -19,7 +19,7 @@
 import simba
 from simba.utils.checks import (check_file_exist_and_readable,
                                 check_if_filepath_list_is_empty,
-                                check_minimum_roll_windows, check)
+                                check_minimum_roll_windows)
 from simba.utils.enums import Options, Paths
 from simba.utils.errors import CountError
 from simba.utils.read_write import (get_bp_headers, read_config_file,
diff --git a/simba/utils/checks.py b/simba/utils/checks.py
index c3720c355..8cef2d25f 100644
--- a/simba/utils/checks.py
+++ b/simba/utils/checks.py
@@ -804,7 +804,7 @@ def check_valid_array(data: np.ndarray,
                       accepted_sizes: Optional[List[int]] = None,
                       accepted_axis_0_shape: Optional[List[int]] = None,
                       accepted_axis_1_shape: Optional[List[int]] = None,
-                      accepted_dtypes: Optional[Union[List[Union[str, Type]], Tuple[Union[str, Type]]], Iterable[Any]] = None,
+                      accepted_dtypes: Optional[Union[List[Union[str, Type]], Tuple[Union[str, Type]], Iterable[Any]]] = None,
                       accepted_values: Optional[List[Any]] = None,
                       accepted_shapes: Optional[List[Tuple[int]]] = None,
                       min_axis_0: Optional[int] = None,