diff --git a/packages/react-devtools-shared/src/inspectedElementMutableSource.js b/packages/react-devtools-shared/src/inspectedElementMutableSource.js
index b5ea32b9608..d91d8de8c1d 100644
--- a/packages/react-devtools-shared/src/inspectedElementMutableSource.js
+++ b/packages/react-devtools-shared/src/inspectedElementMutableSource.js
@@ -102,7 +102,7 @@ export function inspectElement({
       case 'not-found':
         // This is effectively a no-op.
         // If the Element is still in the Store, we can eagerly remove it from the Map.
-        inspectedElementCache.remove(id);
+        inspectedElementCache.del(id);
 
         throw Error(`Element "${id}" not found`);
 
diff --git a/packages/react-devtools-shared/src/types.js b/packages/react-devtools-shared/src/types.js
index 6eb3e2f3a76..ca0943ac923 100644
--- a/packages/react-devtools-shared/src/types.js
+++ b/packages/react-devtools-shared/src/types.js
@@ -86,9 +86,9 @@ export type HookSourceLocationKey = string;
 export type HookNames = Map<HookSourceLocationKey, HookName>;
 
 export type LRUCache<K, V> = {|
+  del: (key: K) => void,
   get: (key: K) => V,
   has: (key: K) => boolean,
-  remove: (key: K) => void,
   reset: () => void,
   set: (key: K, value: V) => void,
 |};