diff --git a/zeroconf/src/macos/service.rs b/zeroconf/src/macos/service.rs
index e36f08b..545c227 100644
--- a/zeroconf/src/macos/service.rs
+++ b/zeroconf/src/macos/service.rs
@@ -97,6 +97,12 @@ impl BonjourMdnsService {
     pub fn register(&mut self) -> Result<EventLoop> {
         debug!("Registering service: {:?}", self);
 
+        let txt_len = self
+            .txt_record
+            .as_ref()
+            .map(|t| t.0.get_length())
+            .unwrap_or(0);
+
         let txt_record = self
             .txt_record
             .as_ref()
@@ -112,7 +118,7 @@ impl BonjourMdnsService {
                 .domain(self.domain.as_ref().as_c_chars().unwrap_or_null())
                 .host(self.host.as_ref().as_c_chars().unwrap_or_null())
                 .port(self.port)
-                .txt_len(self.txt_record.as_ref().map(|t| t.size()).unwrap_or(0))
+                .txt_len(txt_len)
                 .txt_record(txt_record)
                 .callback(Some(register_callback))
                 .context(self.context as *mut c_void)
diff --git a/zeroconf/src/macos/txt_record.rs b/zeroconf/src/macos/txt_record.rs
index 05f9331..5b14a60 100644
--- a/zeroconf/src/macos/txt_record.rs
+++ b/zeroconf/src/macos/txt_record.rs
@@ -87,11 +87,6 @@ impl BonjourTxtRecord {
         Box::new(Values(Iter::new(self)))
     }
 
-    /// Returns the size of the raw bytes in the TXT record.
-    pub fn size(&self) -> u16 {
-        self.0.get_length()
-    }
-
     /// Returns a new `HashMap` with this record's keys and values.
     pub fn to_map(&self) -> HashMap<String, String> {
         let mut m = HashMap::new();