@@ -2,10 +2,8 @@ import type { NativeReviewDiffRow, NativeReviewDiffTheme } from "../diffs/native
 import type { NativeReviewDiffFile } from "../diffs/nativeReviewDiffTypes";
 import * as Arr from "effect/Array";
 import { pipe } from "effect/Function";
-import {
-  DEFAULT_CODE_FONT_SIZE,
-  type ResolvedMobileCodeSurface,
-} from "../../lib/appearancePreferences";
+import type { ResolvedMobileCodeSurface } from "../../lib/appearancePreferences";
+import { MOBILE_CODE_SURFACE } from "../../lib/typography";
 import { resolveHighlightLanguage } from "../../lib/highlightLanguage";
 import { type MobileThemeId, type MobileThemeVariables } from "../../lib/mobileTheme";
 import { getMobileTerminalTheme, type TerminalAppearanceScheme } from "../terminal/terminalTheme";
@@ -72,7 +70,7 @@ export function createNativeReviewDiffStyle(
   codeSurface: ResolvedMobileCodeSurface,
   wordWrap: boolean,
 ) {
-  const scale = codeSurface.fontSize / DEFAULT_CODE_FONT_SIZE;
+  const scale = codeSurface.fontSize / MOBILE_CODE_SURFACE.fontSize;
   const scaled = (size: number) => Math.max(8, Math.round(size * scale));
   return {
     wordWrap,
 
@@ -6,6 +6,11 @@ import { expect, it, vi } from "vite-plus/test";
 
 const bridge = vi.hoisted(() => ({ ios: undefined as StackHeaderConfigProps["ios"] }));
 
+vi.mock("../lib/useSystemFontScale", () => ({ useSystemFontScale: () => (size: number) => size }));
+vi.mock("../features/settings/appearance/AppearancePreferencesProvider", () => ({
+  useAppearancePreferences: () => ({ appearance: { baseFontSize: 15 } }),
+}));
+
 vi.mock("react-native", () => ({ StyleSheet: { flatten: (style: unknown) => style } }));
 vi.mock("react-native-keyboard-controller", () => ({
   KeyboardController: { dismiss: vi.fn() },