diff --git a/funga/eth/keystore/keyfile.py b/funga/eth/keystore/keyfile.py
index 6ad5b6b..6575795 100644
--- a/funga/eth/keystore/keyfile.py
+++ b/funga/eth/keystore/keyfile.py
@@ -97,7 +97,7 @@ class Ciphers:
         return ciphertext
 
 
-def to_dict(private_key_bytes, kdf :str, passphrase=''):
+def to_dict(private_key_bytes, kdf='scrypt', passphrase=''):
     private_key = coincurve.PrivateKey(secret=private_key_bytes)
 
     if kdf == 'scrypt':
diff --git a/funga/eth/runnable/keyfile.py b/funga/eth/runnable/keyfile.py
index ca82e04..738524e 100644
--- a/funga/eth/runnable/keyfile.py
+++ b/funga/eth/runnable/keyfile.py
@@ -79,7 +79,7 @@ def main():
         else:
             pk_bytes = os.urandom(32)
         pk = coincurve.PrivateKey(secret=pk_bytes)
-        o = to_dict(pk_bytes, 'scrypt', passphrase)
+        o = to_dict(pk_bytes, passphrase)
         r = json.dumps(o)
 
     print(r)