diff --git a/packages/@lwc/engine-dom/src/apis/create-element.ts b/packages/@lwc/engine-dom/src/apis/create-element.ts
index cba88ef925..979ead78d5 100644
--- a/packages/@lwc/engine-dom/src/apis/create-element.ts
+++ b/packages/@lwc/engine-dom/src/apis/create-element.ts
@@ -25,6 +25,7 @@ import {
     shouldBeFormAssociated,
 } from '@lwc/engine-core';
 import { renderer } from '../renderer';
+import { logWarnOnce } from '../../../engine-core/src/shared/logger';
 
 // TODO [#2472]: Remove this workaround when appropriate.
 // eslint-disable-next-line @lwc/lwc-internal/no-global-node
@@ -66,6 +67,9 @@ function monkeyPatchDomAPIs() {
             return callNodeSlot(appendedNode, ConnectingSlot);
         },
         insertBefore(newChild, referenceNode) {
+            if (arguments.length < 2) {
+                logWarnOnce('insertBefore should be called with 2 arguments. Calling with only 1 argument is not supported.');
+            }
             const insertedNode = insertBefore.call(this, newChild, referenceNode);
             return callNodeSlot(insertedNode, ConnectingSlot);
         },