diff --git a/RNS/Cryptography/HKDF.py b/RNS/Cryptography/HKDF.py
index 0491dda..5c964b2 100644
--- a/RNS/Cryptography/HKDF.py
+++ b/RNS/Cryptography/HKDF.py
@@ -39,9 +39,6 @@ def hkdf(length=None, derive_from=None, salt=None, context=None):
     if salt == None or len(salt) == 0:
         salt = bytes([0] * hash_len)
 
-    if salt == None:
-        salt = b""
-
     if context == None:
         context = b""