diff --git a/test/test-utils/matchers/to-have-key.ts b/test/test-utils/matchers/to-have-key.ts
index 865646a34d0..b556fc5a4a5 100644
--- a/test/test-utils/matchers/to-have-key.ts
+++ b/test/test-utils/matchers/to-have-key.ts
@@ -25,7 +25,7 @@ export function toHaveKey(this: MatcherState, received: unknown, expectedKey: un
     };
   }
 
-  const keys = [...received.values()];
+  const keys = [...received.keys()];
   const pass = this.equals(keys, expectedKey, [
     ...this.customTesters,
     this.utils.iterableEquality,