diff --git a/packages/react-dom/src/client/ReactDOMComponentTree.js b/packages/react-dom/src/client/ReactDOMComponentTree.js
index b99b3cd54065..a5eae3704280 100644
--- a/packages/react-dom/src/client/ReactDOMComponentTree.js
+++ b/packages/react-dom/src/client/ReactDOMComponentTree.js
@@ -30,10 +30,10 @@ import {getParentSuspenseInstance} from './ReactDOMHostConfig';
 const randomKey = Math.random()
   .toString(36)
   .slice(2);
-const internalInstanceKey = '__reactFiber$' + randomKey;
-const internalEventHandlersKey = '__reactEvents$' + randomKey;
-const internalContainerInstanceKey = '__reactContainer$' + randomKey;
-const internalEventListenersKey = '__reactListeners$' + randomKey;
+const internalInstanceKey = '__reactInternalInstance$' + randomKey;
+const internalEventHandlersKey = '__reactEventHandlers$' + randomKey;
+const internalContainerInstanceKey = '__reactContainere$' + randomKey;
+const internalEventListenersKey = '__reactEventListeners$' + randomKey;
 
 export function precacheFiberNode(
   hostInst: Fiber,
diff --git a/packages/shared/ReactInstanceMap.js b/packages/shared/ReactInstanceMap.js
index 863d520a1a11..60ca4a0426ef 100644
--- a/packages/shared/ReactInstanceMap.js
+++ b/packages/shared/ReactInstanceMap.js
@@ -21,17 +21,17 @@
  * supported we can rename it.
  */
 export function remove(key) {
-  key._reactInternals = undefined;
+  key._reactInternalFiber = undefined;
 }
 
 export function get(key) {
-  return key._reactInternals;
+  return key._reactInternalFiber;
 }
 
 export function has(key) {
-  return key._reactInternals !== undefined;
+  return key._reactInternalFiber !== undefined;
 }
 
 export function set(key, value) {
-  key._reactInternals = value;
+  key._reactInternalFiber = value;
 }