diff --git a/includes/HookHandler/SmallElements.php b/includes/HookHandler/SmallElements.php
index 4b845c11..01542247 100644
--- a/includes/HookHandler/SmallElements.php
+++ b/includes/HookHandler/SmallElements.php
@@ -50,7 +50,7 @@ public function onOutputPageBodyAttributes( $out, $sk, &$bodyAttrs ): void {
 			( !$registered && $config->get( Constants::CONFIG_KEY_SMALL_ELEMENTS_FOR_ANONYMOUS_USER ) )
 			|| ( $registered && !$userOptionsLookup->getBoolOption( $user, Constants::PREF_KEY_LARGER_ELEMENTS ) )
 			) {
-			$bodyAttrs['class'] = $bodyAttrs['class'] ?? '';
+			$bodyAttrs['class'] ??= '';
 			$bodyAttrs['class'] .= ' fw-legacy-small-elements';
 		}
 	}