diff --git a/src/zeroconf/_dns.pxd b/src/zeroconf/_dns.pxd
index e41ac4c3..5ff98a8d 100644
--- a/src/zeroconf/_dns.pxd
+++ b/src/zeroconf/_dns.pxd
@@ -134,7 +134,7 @@ cdef class DNSService(DNSRecord):
 cdef class DNSNsec(DNSRecord):
 
     cdef public cython.int _hash
-    cdef public object next_name
+    cdef public str next_name
     cdef public cython.list rdtypes
 
     cdef _fast_init(self, str name, cython.uint type_, cython.uint class_, cython.float ttl, str next_name, cython.list rdtypes, double created)
diff --git a/src/zeroconf/_protocol/outgoing.pxd b/src/zeroconf/_protocol/outgoing.pxd
index fa1aeebc..bb9730b8 100644
--- a/src/zeroconf/_protocol/outgoing.pxd
+++ b/src/zeroconf/_protocol/outgoing.pxd
@@ -108,6 +108,8 @@ cdef class DNSOutgoing:
 
     cpdef void write_string(self, cython.bytes value)
 
+    cpdef void write_character_string(self, cython.bytes value)
+
     @cython.locals(utfstr=bytes)
     cdef void _write_utf(self, cython.str value)