diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4bfa951..5f55b062 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@ and this project adheres to
 ### Fixed
 
 - 🐛(frontend) disable personal custom background while deleting
+- 🐛(frontend) auto-select new custom background when not logged in
 
 ## [1.11.0] - 2026-03-19
 
diff --git a/src/frontend/src/features/rooms/livekit/components/effects/EffectsConfiguration.tsx b/src/frontend/src/features/rooms/livekit/components/effects/EffectsConfiguration.tsx
index 9573dfd5..115d119c 100644
--- a/src/frontend/src/features/rooms/livekit/components/effects/EffectsConfiguration.tsx
+++ b/src/frontend/src/features/rooms/livekit/components/effects/EffectsConfiguration.tsx
@@ -319,7 +319,9 @@ export const EffectsConfiguration = ({
         }
         const imagePath = URL.createObjectURL(file)
 
-        const fileId = `local-image`
+        // We concatenate with the image path so that the constructed file-id
+        // is unique for local files.
+        const fileId = `local-image-${imagePath}`
         await toggleEffect({
           type: ProcessorType.VIRTUAL,
           imagePath,