diff --git a/include/libp2p/db/datastore.h b/include/libp2p/db/datastore.h
index 6bc40a9..4846903 100644
--- a/include/libp2p/db/datastore.h
+++ b/include/libp2p/db/datastore.h
@@ -30,7 +30,7 @@ struct Datastore {
 	// function pointers for datastore operations
 	int (*datastore_open)(int argc, char** argv, struct Datastore* datastore);
 	int (*datastore_close)(struct Datastore* datastore);
-	int (*datastore_put)(const unsigned char* key, size_t key_size, unsigned char* data, size_t data_length, const struct Datastore* datastore);
+	int (*datastore_put)(struct DatastoreRecord* record, const struct Datastore* datastore);
 	int (*datastore_get)(const unsigned char* key, size_t key_size, struct DatastoreRecord** record, const struct Datastore* datastore);
 	int (*datastore_cursor_open)(struct Datastore* datastore);
 	int (*datastore_cursor_close)(struct Datastore* datastore);
diff --git a/test/test_secio.h b/test/test_secio.h
index d2a5630..52e2632 100644
--- a/test/test_secio.h
+++ b/test/test_secio.h
@@ -91,7 +91,7 @@ int test_secio_handshake() {
 	// attempt to write the protocol, and see what comes back
 	char* protocol = "/secio/1.0.0\n";
 	int protocol_size = strlen(protocol);
-	secure_session.insecure_stream->write(&secure_session, protocol, protocol_size);
+	secure_session.insecure_stream->write(&secure_session, (unsigned char*)protocol, protocol_size);
 
 	unsigned char* buffer = NULL;
 	size_t bytes_read = 0;