diff --git a/src/lib/core/a11y/interactivity-checker.ts b/src/lib/core/a11y/interactivity-checker.ts
index 8a40c1e4b8e6..7f879ac9e7a8 100644
--- a/src/lib/core/a11y/interactivity-checker.ts
+++ b/src/lib/core/a11y/interactivity-checker.ts
@@ -160,7 +160,7 @@ function isAnchorWithHref(element: HTMLElement): boolean {
 
 /** Gets whether an element is an input element. */
 function isInputElement(element: HTMLElement): element is HTMLInputElement {
-  return element.nodeName == 'input';
+  return element.nodeName.toLowerCase() == 'input';
 }
 
 /** Gets whether an element is an anchor element. */