diff --git a/flow-server/src/main/resources/vite.generated.ts b/flow-server/src/main/resources/vite.generated.ts
index 05fa761b591..9bcfebed8c2 100644
--- a/flow-server/src/main/resources/vite.generated.ts
+++ b/flow-server/src/main/resources/vite.generated.ts
@@ -686,7 +686,12 @@ export const vaadinConfig: UserConfigFn = (env) => {
           // exposes the compiler API to Node, so the checker falls back to
           // running tsc as a separate process and resolves the config
           // strictly against this root without searching parent folders.
-          root: __dirname
+          // The root is relative because the checker passes it to tsc as
+          // "-p <root>" in a command line that is split on spaces, which
+          // would break for a project directory containing a space. Vite is
+          // always spawned with the project root as its working directory,
+          // which is this directory, so "." resolves to the same tsconfig.
+          root: '.'
         }
       }),
       productionMode && visualizer({ brotliSize: true, filename: bundleSizeFile })