diff --git a/packages/sshnoports/lib/sshnp/sshnp.dart b/packages/sshnoports/lib/sshnp/sshnp.dart
index ca7879452..6a184ea19 100644
--- a/packages/sshnoports/lib/sshnp/sshnp.dart
+++ b/packages/sshnoports/lib/sshnp/sshnp.dart
@@ -87,7 +87,7 @@ abstract class SSHNP {
   abstract final String namespace;
 
   /// When using sshrvd, this is fetched from sshrvd during [init]
-  abstract final String sshrvdPort;
+  String get sshrvdPort;
 
   /// Set to '$localPort $port $username $host $sessionId' during [init]
   abstract final String sshString;
diff --git a/packages/sshnoports/lib/sshnp/sshnp_impl.dart b/packages/sshnoports/lib/sshnp/sshnp_impl.dart
index e99ecd76c..973e2830a 100644
--- a/packages/sshnoports/lib/sshnp/sshnp_impl.dart
+++ b/packages/sshnoports/lib/sshnp/sshnp_impl.dart
@@ -114,8 +114,12 @@ class SSHNPImpl implements SSHNP {
   late final String namespace;
 
   /// When using sshrvd, this is fetched from sshrvd during [init]
+  /// This is only set when using sshrvd
+  /// (i.e. after [getHostAndPortFromSshrvd] has been called)
   @override
-  late final String sshrvdPort;
+  String get sshrvdPort => _sshrvdPort;
+
+  late String _sshrvdPort;
 
   /// Set to '$localPort $port $username $host $sessionId' during [init]
   @override
@@ -484,7 +488,7 @@ class SSHNPImpl implements SSHNP {
       List results = ipPorts.split(',');
       host = results[0];
       port = results[1];
-      sshrvdPort = results[2];
+      _sshrvdPort = results[2];
       sshrvdAck = true;
     });
 
@@ -525,7 +529,7 @@ class SSHNPImpl implements SSHNP {
 
     // Connect to rendezvous point using background process.
     // sshnp (this program) can then exit without issue.
-    unawaited(Process.run(getSshrvCommand(), [host, sshrvdPort]));
+    unawaited(Process.run(getSshrvCommand(), [host, _sshrvdPort]));
   }
 
   Future<void> generateSshKeys() async {