diff --git a/.changeset/little-turtles-applaud.md b/.changeset/little-turtles-applaud.md
new file mode 100644
index 00000000000..66dfe471250
--- /dev/null
+++ b/.changeset/little-turtles-applaud.md
@@ -0,0 +1,5 @@
+---
+"@remix-run/dev": patch
+---
+
+Vite: Fix support for `build.sourcemap` option in Vite config
diff --git a/packages/remix-dev/vite/build.ts b/packages/remix-dev/vite/build.ts
index 6000c8a8b3b..682f3cfefac 100644
--- a/packages/remix-dev/vite/build.ts
+++ b/packages/remix-dev/vite/build.ts
@@ -237,8 +237,8 @@ export async function build(
     logLevel,
     minify,
     mode,
-    sourcemapClient = false,
-    sourcemapServer = false,
+    sourcemapClient,
+    sourcemapServer,
   }: ViteBuildOptions
 ) {
   // Ensure Vite's ESM build is preloaded at the start of the process