diff --git a/.changeset/chilly-poets-march.md b/.changeset/chilly-poets-march.md
new file mode 100644
index 000000000..78135f19b
--- /dev/null
+++ b/.changeset/chilly-poets-march.md
@@ -0,0 +1,6 @@
+---
+'@lion/core': minor
+'@lion/calendar': minor
+---
+
+Remove keyboardEventShimIE test helper
diff --git a/packages/calendar/test/lion-calendar.test.js b/packages/calendar/test/lion-calendar.test.js
index 7fa259fe6..9b3788ea4 100644
--- a/packages/calendar/test/lion-calendar.test.js
+++ b/packages/calendar/test/lion-calendar.test.js
@@ -1,5 +1,4 @@
 import { html } from '@lion/core';
-import '@lion/core/test-helpers';
 import { localize } from '@lion/localize';
 import { localizeTearDown } from '@lion/localize/test-helpers';
 import { expect, fixture as _fixture } from '@open-wc/testing';
diff --git a/packages/core/package.json b/packages/core/package.json
index e91fccdf6..ad7b59ff7 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -19,7 +19,6 @@
     "docs",
     "src",
     "test",
-    "test-helpers",
     "translations",
     "types"
   ],
@@ -48,7 +47,6 @@
   },
   "exports": {
     ".": "./index.js",
-    "./test-helpers": "./test-helpers/index.js",
     "./closestPolyfill": "./src/closestPolyfill.js",
     "./docs/*": "./docs/*"
   }
diff --git a/packages/core/test-helpers/index.js b/packages/core/test-helpers/index.js
deleted file mode 100644
index db30d4fee..000000000
--- a/packages/core/test-helpers/index.js
+++ /dev/null
@@ -1 +0,0 @@
-export * from './keyboardEventShimIE.js';
diff --git a/packages/core/test-helpers/keyboardEventShimIE.js b/packages/core/test-helpers/keyboardEventShimIE.js
deleted file mode 100644
index 45e834217..000000000
--- a/packages/core/test-helpers/keyboardEventShimIE.js
+++ /dev/null
@@ -1,49 +0,0 @@
-if (typeof window.KeyboardEvent !== 'function') {
-  // e.g. is IE and needs "polyfill"
-  const KeyboardEvent = (event, _params) => {
-    // current spec for it https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/KeyboardEvent
-    const params = {
-      bubbles: false,
-      cancelable: false,
-      view: document.defaultView,
-      key: false,
-      location: false,
-      ctrlKey: false,
-      shiftKey: false,
-      altKey: false,
-      metaKey: false,
-      repeat: false,
-      ..._params,
-    };
-    const modifiersListArray = [];
-    if (params.ctrlKey) {
-      modifiersListArray.push('Control');
-    }
-    if (params.shiftKey) {
-      modifiersListArray.push('Shift');
-    }
-    if (params.altKey) {
-      modifiersListArray.push('Alt');
-    }
-    if (params.metaKey) {
-      modifiersListArray.push('Meta');
-    }
-
-    const ev = document.createEvent('KeyboardEvent');
-    // IE Spec for it https://technet.microsoft.com/en-us/windows/ff975297(v=vs.60)
-    ev.initKeyboardEvent(
-      event,
-      params.bubbles,
-      params.cancelable,
-      params.view,
-      params.key,
-      params.location,
-      modifiersListArray.join(' '),
-      params.repeat ? 1 : 0,
-      params.locale,
-    );
-    return ev;
-  };
-  KeyboardEvent.prototype = window.Event.prototype;
-  window.KeyboardEvent = KeyboardEvent;
-}