diff --git a/lib/src/rtc_rtcp_parameters.dart b/lib/src/rtc_rtcp_parameters.dart
index 5c2ee56..64e1811 100644
--- a/lib/src/rtc_rtcp_parameters.dart
+++ b/lib/src/rtc_rtcp_parameters.dart
@@ -5,7 +5,7 @@ class RTCRTCPParameters {
   }
 
   /// The Canonical Name used by RTCP
-  String cname;
+  String? cname;
 
   /// Whether reduced size RTCP is configured or compound RTCP
   bool reducedSize;