diff --git a/packages/astro/src/core/render-context.ts b/packages/astro/src/core/render-context.ts
index e001461593e2..ba8a0fd2174f 100644
--- a/packages/astro/src/core/render-context.ts
+++ b/packages/astro/src/core/render-context.ts
@@ -591,8 +591,20 @@ export class RenderContext {
 				computedLocale = computeCurrentLocale(referer, locales, defaultLocale);
 			}
 		} else {
-			const pathname =
-				routeData.pathname && !isRoute404or500(routeData) ? routeData.pathname : url.pathname;
+			// For SSG we match the route naively, for dev we handle fallback on 404, for SSR we find route from fallbackRoutes
+			const route =
+				(routeData.pattern.test(url.pathname)
+					? routeData
+					: routeData.fallbackRoutes.find((fallbackRoute) =>
+							fallbackRoute.pattern.test(url.pathname),
+						)) ?? routeData;
+			const pathname = route.pathname && !isRoute404or500(route) ? route.pathname : url.pathname;
+			// console.log('route', route);
+			// console.table({
+			// 	routePath: routeData.pathname,
+			// 	is404Or500: isRoute404or500(routeData),
+			// 	urlPathname: url.pathname,
+			// });
 			computedLocale = computeCurrentLocale(pathname, locales, defaultLocale);
 		}
 
diff --git a/packages/astro/test/i18n-routing.test.js b/packages/astro/test/i18n-routing.test.js
index dc338c7db0b7..9d98a8cf0016 100644
--- a/packages/astro/test/i18n-routing.test.js
+++ b/packages/astro/test/i18n-routing.test.js
@@ -1,6 +1,6 @@
+import * as cheerio from 'cheerio';
 import * as assert from 'node:assert/strict';
 import { after, afterEach, before, describe, it } from 'node:test';
-import * as cheerio from 'cheerio';
 import testAdapter from './test-adapter.js';
 import { loadFixture } from './test-utils.js';