diff --git a/confiture-rest-api/src/audits/file-storage.service.ts b/confiture-rest-api/src/audits/file-storage.service.ts
index 11acaa38..a555ab06 100644
--- a/confiture-rest-api/src/audits/file-storage.service.ts
+++ b/confiture-rest-api/src/audits/file-storage.service.ts
@@ -67,9 +67,9 @@ export class FileStorageService {
           (d) =>
             new CopyObjectCommand({
               Bucket: this.config.get<string>("S3_BUCKET"),
-              CopySource: `/${this.config.get<string>("S3_BUCKET")}/${
-                d.originalKey
-              }`,
+              CopySource: encodeURIComponent(
+                `/${this.config.get<string>("S3_BUCKET")}/${d.originalKey}`
+              ),
               Key: d.destinationKey,
               ACL: "public-read"
             })