diff --git a/gptc/model.py b/gptc/model.py
index f2d6760..1f2840d 100644
--- a/gptc/model.py
+++ b/gptc/model.py
@@ -70,7 +70,9 @@ class Model:
     def get(self, token: str) -> Dict[str, float]:
         try:
             weights = self.weights[
-                gptc.tokenizer.hash_single(gptc.tokenizer.normalize(token))
+                gptc.tokenizer.hash_single(
+                    gptc.tokenizer.normalize(token), self.hash_algorithm
+                )
             ]
         except KeyError:
             return {}
diff --git a/gptc/tokenizer.py b/gptc/tokenizer.py
index bd75685..26fa205 100644
--- a/gptc/tokenizer.py
+++ b/gptc/tokenizer.py
@@ -45,13 +45,13 @@ def tokenize(text: str, max_ngram_length: int = 1) -> List[str]:
         return ngrams
 
 
-def hash_single(token: str, hash_function: Callable) -> int:
+def _hash_single(token: str, hash_function: Callable) -> int:
     return int.from_bytes(
         hash_function(token.encode("utf-8")).digest()[:6], "big"
     )
 
 
-def hash(tokens: List[str], hash_algorithm: str) -> List[int]:
+def _get_hash_function(hash_algorithm: str) -> Callable:
     if hash_algorithm in {
         "sha224",
         "md5",
@@ -68,11 +68,19 @@ def hash(tokens: List[str], hash_algorithm: str) -> List[int]:
         "shake_128",
         "sha3_384",
     }:
-        hash_function = getattr(hashlib, hash_algorithm)
-        return [hash_single(token, hash_function) for token in tokens]
+        return getattr(hashlib, hash_algorithm)
     else:
         raise ValueError("not a valid hash function: " + hash_algorithm)
 
 
+def hash_single(token: str, hash_algorithm: str) -> List[int]:
+    return _hash_single(token, _get_hash_function(hash_algorithm))
+
+
+def hash(tokens: List[str], hash_algorithm: str) -> List[int]:
+    hash_function = _get_hash_function(hash_algorithm)
+    return [_hash_single(token, hash_function) for token in tokens]
+
+
 def normalize(text: str) -> str:
     return " ".join(tokenize(text, 1))