diff --git a/transports/webrtc-websys/src/connection.rs b/transports/webrtc-websys/src/connection.rs
index b858237da635..d0c6ccd2238d 100644
--- a/transports/webrtc-websys/src/connection.rs
+++ b/transports/webrtc-websys/src/connection.rs
@@ -186,11 +186,11 @@ impl RtcPeerConnection {
 
         let certificate = JsFuture::from(certificate_promise).await?;
 
-        let mut config = RtcConfiguration::default();
+        let config = RtcConfiguration::default();
         // wrap certificate in a js Array first before adding it to the config object
         let certificate_arr = js_sys::Array::new();
         certificate_arr.push(&certificate);
-        config.certificates(&certificate_arr);
+        config.set_certificates(&certificate_arr);
 
         let inner = web_sys::RtcPeerConnection::new_with_configuration(&config)?;
 
@@ -214,8 +214,9 @@ impl RtcPeerConnection {
 
         let dc = match negotiated {
             true => {
-                let mut options = RtcDataChannelInit::new();
-                options.negotiated(true).id(0); // id is only ever set to zero when negotiated is true
+                let options = RtcDataChannelInit::new();
+                options.set_negotiated(true);
+                options.set_id(0); // id is only ever set to zero when negotiated is true
 
                 self.inner
                     .create_data_channel_with_data_channel_dict(LABEL, &options)
diff --git a/transports/webrtc-websys/src/sdp.rs b/transports/webrtc-websys/src/sdp.rs
index 439182ea4dbe..9e63fd92462f 100644
--- a/transports/webrtc-websys/src/sdp.rs
+++ b/transports/webrtc-websys/src/sdp.rs
@@ -8,8 +8,8 @@ pub(crate) fn answer(
     server_fingerprint: Fingerprint,
     client_ufrag: &str,
 ) -> RtcSessionDescriptionInit {
-    let mut answer_obj = RtcSessionDescriptionInit::new(RtcSdpType::Answer);
-    answer_obj.sdp(&libp2p_webrtc_utils::sdp::answer(
+    let answer_obj = RtcSessionDescriptionInit::new(RtcSdpType::Answer);
+    answer_obj.set_sdp(&libp2p_webrtc_utils::sdp::answer(
         addr,
         server_fingerprint,
         client_ufrag,
@@ -48,8 +48,8 @@ pub(crate) fn offer(offer: String, client_ufrag: &str) -> RtcSessionDescriptionI
 
     tracing::trace!(offer=%munged_sdp_offer, "Created SDP offer");
 
-    let mut offer_obj = RtcSessionDescriptionInit::new(RtcSdpType::Offer);
-    offer_obj.sdp(&munged_sdp_offer);
+    let offer_obj = RtcSessionDescriptionInit::new(RtcSdpType::Offer);
+    offer_obj.set_sdp(&munged_sdp_offer);
 
     offer_obj
 }
diff --git a/transports/webrtc-websys/src/stream/poll_data_channel.rs b/transports/webrtc-websys/src/stream/poll_data_channel.rs
index 9b1e2d8aa4d7..3ec744342eb2 100644
--- a/transports/webrtc-websys/src/stream/poll_data_channel.rs
+++ b/transports/webrtc-websys/src/stream/poll_data_channel.rs
@@ -144,6 +144,7 @@ impl PollDataChannel {
                 return Poll::Ready(Err(io::ErrorKind::BrokenPipe.into()))
             }
             RtcDataChannelState::Open | RtcDataChannelState::__Invalid => {}
+            _ => {}
         }
 
         if self.overloaded.load(Ordering::SeqCst) {