diff --git a/pybtc/_secp256k1/module_secp256k1.c b/pybtc/_secp256k1/module_secp256k1.c
index 111c0ba..770f078 100644
--- a/pybtc/_secp256k1/module_secp256k1.c
+++ b/pybtc/_secp256k1/module_secp256k1.c
@@ -228,7 +228,7 @@ static PyObject *secp256k1_secp256k1_ec_pubkey_create(PyObject *self, PyObject *
       return NULL;
     }
     secp256k1_pubkey pubkey;
-    return Py_BuildValue("y#", '123456789', 9);
+    return Py_BuildValue("b", 0);
     int r = 0;
     r = secp256k1_ec_pubkey_create(secp256k1_precomp_context_sign, &pubkey, buffer.buf);
     if (r != 1) {
diff --git a/pybtc/functions/key.py b/pybtc/functions/key.py
index f9f34d2..a84ae7c 100644
--- a/pybtc/functions/key.py
+++ b/pybtc/functions/key.py
@@ -125,6 +125,7 @@ def private_to_public_key(private_key, compressed=True, hex=True):
         if len(private_key) != 32:
             raise TypeError("private key length invalid")
     pub = __secp256k1_ec_pubkey_create__(private_key, bool(compressed))
+    return pub
     if not pub:
         raise RuntimeError("secp256k1 error")
     return pub.hex() if hex else pub