diff --git a/packages/react-dom/src/events/DOMEventResponderSystem.js b/packages/react-dom/src/events/DOMEventResponderSystem.js
index c2a0c089c02aa..14bd5f5fff734 100644
--- a/packages/react-dom/src/events/DOMEventResponderSystem.js
+++ b/packages/react-dom/src/events/DOMEventResponderSystem.js
@@ -303,16 +303,6 @@ function validateEventValue(eventValue: any): void {
);
}
};
- eventValue.preventDefault = () => {
- if (__DEV__) {
- showWarning('preventDefault()');
- }
- };
- eventValue.stopPropagation = () => {
- if (__DEV__) {
- showWarning('stopPropagation()');
- }
- };
eventValue.isDefaultPrevented = () => {
if (__DEV__) {
showWarning('isDefaultPrevented()');
diff --git a/packages/react-dom/src/events/__tests__/DOMEventResponderSystem-test.internal.js b/packages/react-dom/src/events/__tests__/DOMEventResponderSystem-test.internal.js
index 90605b9f6179f..83f17d0c1723d 100644
--- a/packages/react-dom/src/events/__tests__/DOMEventResponderSystem-test.internal.js
+++ b/packages/react-dom/src/events/__tests__/DOMEventResponderSystem-test.internal.js
@@ -837,30 +837,6 @@ describe('DOMEventResponderSystem', () => {
);
};
- expect(() => {
- handler = event => {
- event.preventDefault();
- };
- ReactDOM.render(, container);
- dispatchClickEvent(buttonRef.current);
- }).toWarnDev(
- 'Warning: preventDefault() is not available on event objects created from event responder modules ' +
- '(React Flare).' +
- ' Try wrapping in a conditional, i.e. `if (event.type !== "press") { event.preventDefault() }`',
- {withoutStack: true},
- );
- expect(() => {
- handler = event => {
- event.stopPropagation();
- };
- ReactDOM.render(, container);
- dispatchClickEvent(buttonRef.current);
- }).toWarnDev(
- 'Warning: stopPropagation() is not available on event objects created from event responder modules ' +
- '(React Flare).' +
- ' Try wrapping in a conditional, i.e. `if (event.type !== "press") { event.stopPropagation() }`',
- {withoutStack: true},
- );
expect(() => {
handler = event => {
event.isDefaultPrevented();