diff --git a/strings/anagrams.py b/strings/anagrams.py
index b671d3f3d..fb9ac0bd1 100644
--- a/strings/anagrams.py
+++ b/strings/anagrams.py
@@ -26,15 +26,15 @@ def anagram(my_word: str) -> list[str]:
     >>> anagram('final')
     ['final']
     """
-    return word_bysig[signature(my_word)]
+    return word_by_signature[signature(my_word)]
 
 
 data: str = Path(__file__).parent.joinpath("words.txt").read_text(encoding="utf-8")
 word_list = sorted({word.strip().lower() for word in data.splitlines()})
 
-word_bysig = collections.defaultdict(list)
+word_by_signature = collections.defaultdict(list)
 for word in word_list:
-    word_bysig[signature(word)].append(word)
+    word_by_signature[signature(word)].append(word)
 
 if __name__ == "__main__":
     all_anagrams = {word: anagram(word) for word in word_list if len(anagram(word)) > 1}