diff --git a/includes/sanitizers/class-amp-tag-and-attribute-sanitizer.php b/includes/sanitizers/class-amp-tag-and-attribute-sanitizer.php
index e3b707f555c..aac823f191a 100644
--- a/includes/sanitizers/class-amp-tag-and-attribute-sanitizer.php
+++ b/includes/sanitizers/class-amp-tag-and-attribute-sanitizer.php
@@ -2466,10 +2466,6 @@ private function remove_disallowed_descendants( DOMElement $node, $allowed_desce
 	 * @param string     $spec_name Spec name.
 	 */
 	private function remove_disallowed_siblings( DOMElement $node, $spec_name ) {
-		if ( ! $node->previousSibling && ! $node->nextSibling ) {
-			return;
-		}
-
 		$prev_sibling = $node->previousSibling;
 		while ( null !== $prev_sibling ) {
 			$prev_prev_sibling = $prev_sibling->previousSibling;