diff --git a/bundlesize.config.json b/bundlesize.config.json
index 28b5950..c990396 100644
--- a/bundlesize.config.json
+++ b/bundlesize.config.json
@@ -5,7 +5,7 @@
 	},
 	{
 		"resourceModule": "skins.vector.styles",
-		"maxSize": "9.6 kB"
+		"maxSize": "9.62 kB"
 	},
 	{
 		"resourceModule": "skins.vector.legacy.js",
diff --git a/resources/skins.vector.js/languageButton.js b/resources/skins.vector.js/languageButton.js
index e081689..a73b5fd 100644
--- a/resources/skins.vector.js/languageButton.js
+++ b/resources/skins.vector.js/languageButton.js
@@ -29,7 +29,7 @@ function disableDropdownBehavior( pLangBtn ) {
 	if ( !pLangBtn ) {
 		return;
 	}
-	pLangBtn.classList.add( 'vector-menu--hide-dropdown' );
+	pLangBtn.classList.add( 'vector-menu-hide-dropdown' );
 }
 
 /**
diff --git a/resources/skins.vector.styles/components/LanguageButton.less b/resources/skins.vector.styles/components/LanguageButton.less
index 6380dd1..1d6081c 100644
--- a/resources/skins.vector.styles/components/LanguageButton.less
+++ b/resources/skins.vector.styles/components/LanguageButton.less
@@ -86,7 +86,7 @@
 
 	// When the ext.uls.interface module is loaded, we hide the fallback menu and
 	// checkbox.
-	&.vector-menu--hide-dropdown {
+	&.vector-menu-hide-dropdown {
 		.vector-menu-checkbox,
 		.vector-menu-content {
 			display: none;
diff --git a/stories/LanguageButton.stories.js b/stories/LanguageButton.stories.js
index 2939ba6..89e2a66 100644
--- a/stories/LanguageButton.stories.js
+++ b/stories/LanguageButton.stories.js
@@ -36,7 +36,7 @@ export const languageButtonWhenULSEnabled = () => wrapLanguageButton(
 	wrapLanguageButton(
 		wrapLanguageButton(
 			mustache.render( vectorMenuTemplate, languageData ),
-			'vector-menu--hide-dropdown'
+			'vector-menu-hide-dropdown'
 		),
 		CONTAINER_CLASS_MODERN_VECTOR
 	),