diff --git a/src/checks.py b/src/checks.py
index 1201813380aaeb95759a31418e9d82d067341b84..4201a01b1f38af4aa0916048b028d48ee7b296e1 100644
--- a/src/checks.py
+++ b/src/checks.py
@@ -71,20 +71,6 @@ def check_data_range(img: np.ndarray) -> None:
         raise Exception(f'Pixel\'s values must be in range [0, 1]. Got range [{np.min(img)}, {np.max(img)}].')
 
 
-def check_len(img1_list: list | np.ndarray, img2_list: list | np.ndarray) -> None:
-    """Checks if two lists have the same length.
-
-    Args:
-        img1_list (list | np.ndarray): First list.
-        img2_list (list | np.ndarray): Secind list.
-
-    Raises:
-        Exception: Exception if the two list do not have the same length.
-    """
-    if len(img1_list) != len(img2_list):
-        raise Exception(f'The two lists must have the same length. Got {len(img1_list)} and {len(img2_list)}.')
-
-
 def check_cfa(cfa: str) -> None:
     """Checks if the CFA's name is correct.
 
diff --git a/src/utils.py b/src/utils.py
index 7a5340f25852726d240a7b261d4b48ca17419c64..e7213270b860c2aed3d61361e1aa637f6d620d7e 100755
--- a/src/utils.py
+++ b/src/utils.py
@@ -7,7 +7,7 @@ from skimage.metrics import peak_signal_noise_ratio, structural_similarity
 from skimage.io import imread, imsave
 import numpy as np
 
-from src.checks import check_len, check_data_range, check_rgb, check_shape, check_path, check_png
+from src.checks import check_data_range, check_rgb, check_shape, check_path, check_png
 
 
 def normalise_image(img: np.ndarray) -> np.ndarray: