diff --git a/libp2p/crypto/keys.py b/libp2p/crypto/keys.py
index b0dec3d9..c43ddb7c 100644
--- a/libp2p/crypto/keys.py
+++ b/libp2p/crypto/keys.py
@@ -48,8 +48,12 @@ class PublicKey(Key):
     def serialize_to_protobuf(self) -> protobuf.PublicKey:
         key_type = self.get_type().value
         data = self.to_bytes()
+<<<<<<< HEAD
         protobuf_key = protobuf.PublicKey(key_type=key_type, data=data)
         return protobuf_key
+=======
+        return protobuf.PublicKey(key_type=_type.value, data=data)
+>>>>>>> Fix mypy
 
 
 class PrivateKey(Key):
@@ -68,8 +72,12 @@ class PrivateKey(Key):
     def serialize_to_protobuf(self) -> protobuf.PrivateKey:
         key_type = self.get_type().value
         data = self.to_bytes()
+<<<<<<< HEAD
         protobuf_key = protobuf.PrivateKey(key_type=key_type, data=data)
         return protobuf_key
+=======
+        return protobuf.PrivateKey(key_type=_type.value, data=data)
+>>>>>>> Fix mypy
 
 
 @dataclass(frozen=True)