diff --git a/apps/backend/src/lib/images.tsx b/apps/backend/src/lib/images.tsx
index 6b1ceb93e..ce43ca2f7 100644
--- a/apps/backend/src/lib/images.tsx
+++ b/apps/backend/src/lib/images.tsx
@@ -1,4 +1,4 @@
-class ImageProcessingError extends Error {
+export class ImageProcessingError extends Error {
   constructor(message: string) {
     super(message);
     this.name = 'ImageProcessingError';