diff --git a/src/components/video-editor/projectPersistence.test.ts b/src/components/video-editor/projectPersistence.test.ts
index 0659cb7..8a17b9e 100644
--- a/src/components/video-editor/projectPersistence.test.ts
+++ b/src/components/video-editor/projectPersistence.test.ts
@@ -220,6 +220,13 @@ describe("wallpaper legacy normalization", () => {
 		expect(normalized.wallpaper).toBe("/wallpapers/wallpaper1.jpg");
 	});
 
+	it("rewrites Windows-style file URLs with drive letter", () => {
+		const normalized = normalizeProjectEditor({
+			wallpaper: "file:///C:/Users/me/openscreen/resources/wallpapers/wallpaper2.jpg",
+		});
+		expect(normalized.wallpaper).toBe("/wallpapers/wallpaper2.jpg");
+	});
+
 	it("leaves canonical relative paths untouched", () => {
 		const normalized = normalizeProjectEditor({ wallpaper: "/wallpapers/wallpaper2.jpg" });
 		expect(normalized.wallpaper).toBe("/wallpapers/wallpaper2.jpg");