diff --git a/server-rs/crates/api-server/src/error_reports.rs b/server-rs/crates/api-server/src/error_reports.rs
index dc6cb6805..677ea781a 100644
--- a/server-rs/crates/api-server/src/error_reports.rs
+++ b/server-rs/crates/api-server/src/error_reports.rs
@@ -182,13 +182,12 @@ pub async fn create_error_report(
                 .await
                 .map_err(internal_store_error)?;
             let digest = format!("{:x}", Sha256::digest(&archive));
-            let key_segments = vec!["error-reports".to_string(), "v1".to_string()];
             let response = oss
                 .put_object(
                     state.editor_oss_http_client(),
                     OssPutObjectRequest {
                         prefix: LegacyAssetPrefix::AgcErrorReports,
-                        path_segments: key_segments,
+                        path_segments: error_report_oss_path_segments(),
                         file_name: format!("{}.zip", stored.batch_id),
                         content_type: Some("application/zip".to_string()),
                         access: OssObjectAccess::Private,
@@ -372,6 +371,10 @@ fn internal_store_error(error: String) -> AppError {
     AppError::from_status(StatusCode::INTERNAL_SERVER_ERROR).with_message(error)
 }
 
+fn error_report_oss_path_segments() -> Vec<String> {
+    vec!["error-reports".to_string(), "v1".to_string()]
+}
+
 pub(crate) fn build_error_report_archive(
     events: &[Event],
     user_description: Option<&str>,
@@ -1040,6 +1043,11 @@ mod tests {
         assert!(error.contains("events.jsonl"));
     }
 
+    #[test]
+    fn error_report_oss_path_uses_only_uuid_filename_segment() {
+        assert_eq!(error_report_oss_path_segments(), ["error-reports", "v1"]);
+    }
+
     #[test]
     fn sanitize_report_text_redacts_credentials_and_paths() {
         assert_eq!(