diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 6e4d8020a..415a96490 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -18154,7 +18154,7 @@ interface RTCDataChannelEventMap {
     "bufferedamountlow": Event;
     "close": Event;
     "closing": Event;
-    "error": Event;
+    "error": RTCErrorEvent;
     "message": MessageEvent;
     "open": Event;
 }
@@ -18184,7 +18184,7 @@ interface RTCDataChannel extends EventTarget {
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCDataChannel/closing_event) */
     onclosing: ((this: RTCDataChannel, ev: Event) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCDataChannel/error_event) */
-    onerror: ((this: RTCDataChannel, ev: Event) => any) | null;
+    onerror: ((this: RTCDataChannel, ev: RTCErrorEvent) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCDataChannel/message_event) */
     onmessage: ((this: RTCDataChannel, ev: MessageEvent) => any) | null;
     /** [MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCDataChannel/open_event) */
diff --git a/inputfiles/overridingTypes.jsonc b/inputfiles/overridingTypes.jsonc
index 416f88377..ec422f529 100644
--- a/inputfiles/overridingTypes.jsonc
+++ b/inputfiles/overridingTypes.jsonc
@@ -2079,6 +2079,10 @@
             "RTCDataChannel": {
                 "events": {
                     "event": [
+                        {
+                            "name": "error",
+                            "type": "RTCErrorEvent"
+                        },
                         {
                             "name": "message",
                             "type": "MessageEvent"