diff --git a/packages/core/accessibility/accessibility-css-helper.ts b/packages/core/accessibility/accessibility-css-helper.ts
index 2fe70f22c..e029a4fc6 100644
--- a/packages/core/accessibility/accessibility-css-helper.ts
+++ b/packages/core/accessibility/accessibility-css-helper.ts
@@ -92,7 +92,7 @@ function updateCurrentHelperClasses(): void {
 	const oldActiveFontScaleCategory = currentFontScaleCategory;
 	switch (fontScaleCategory) {
 		case FontScaleCategory.ExtraSmall: {
-			currentFontScaleCategory = fontScaleMediumCategoryClass;
+			currentFontScaleCategory = fontScaleExtraSmallCategoryClass;
 			break;
 		}
 		case FontScaleCategory.Medium: {
diff --git a/packages/core/accessibility/font-scale-common.ts b/packages/core/accessibility/font-scale-common.ts
index 04964431b..b6d29b959 100644
--- a/packages/core/accessibility/font-scale-common.ts
+++ b/packages/core/accessibility/font-scale-common.ts
@@ -5,7 +5,7 @@ export const VALID_FONT_SCALES = global.isIOS // iOS supports a wider number of
 export function getClosestValidFontScale(fontScale: number): number {
 	fontScale = Number(fontScale) || 1;
 
-	return VALID_FONT_SCALES.sort((a, b) => Math.abs(fontScale - a) - Math.abs(fontScale - b)).shift();
+	return VALID_FONT_SCALES.sort((a, b) => Math.abs(fontScale - a) - Math.abs(fontScale - b))[0];
 }
 
 export enum FontScaleCategory {