diff --git a/modules/hasher.py b/modules/hasher.py
index afd2389..857c5f6 100644
--- a/modules/hasher.py
+++ b/modules/hasher.py
@@ -1,3 +1,6 @@
+from pathlib import Path
+from typing import Union
+
 import cv2
 import numpy as np
 from numpy.typing import NDArray
@@ -27,8 +30,8 @@ def get_duplicates_cache(album: str) -> dict:
     return output
 
 
-async def get_phash(filepath: str) -> str:
-    img = cv2.imread(filepath)
+async def get_phash(filepath: Union[str, Path]) -> str:
+    img = cv2.imread(str(filepath))
     # resize image and convert to gray scale
     img = cv2.resize(img, (64, 64))
     img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
@@ -49,14 +52,14 @@ async def get_phash(filepath: str) -> str:
     return hash_array_to_hash_hex(dct_block.flatten())
 
 
-async def get_duplicates(hash: str, album: str) -> list:
+async def get_duplicates(hash_string: str, album: str) -> list:
     duplicates = []
     cache = get_duplicates_cache(album)
-    for image_name in cache.keys():
+    for image_name, image_value in cache.items():
         try:
             distance = spatial.distance.hamming(
                 hash_hex_to_hash_array(cache[image_name][1]),
-                hash_hex_to_hash_array(hash),
+                hash_hex_to_hash_array(hash_string),
             )
         except ValueError:
             continue