diff --git a/cmd/backoffice/fileserver.go b/cmd/backoffice/fileserver.go
index d437ef7..b86f1f8 100644
--- a/cmd/backoffice/fileserver.go
+++ b/cmd/backoffice/fileserver.go
@@ -41,15 +41,12 @@ func listCartFiles(dir string) ([]CartFileInfo, error) {
 			continue
 		}
 		name := e.Name()
-		var id uint64
+		var id int64
 		var parseErr error
 		parts := strings.Split(name, ".")
-		if len(parts) == 2 && parts[1] == "events.log" {
+		if len(parts) > 1 && parts[1] == "events" {
 			idStr := parts[0]
-			id, parseErr = strconv.ParseUint(idStr, 10, 64)
-		} else if len(parts) == 3 && parts[1] == "events" && parts[2] == "log" {
-			idStr := parts[0]
-			id, parseErr = strconv.ParseUint(idStr, 10, 64)
+			id, parseErr = strconv.ParseInt(idStr, 10, 64)
 		} else {
 			continue
 		}
@@ -62,7 +59,7 @@ func listCartFiles(dir string) ([]CartFileInfo, error) {
 			continue
 		}
 		out = append(out, CartFileInfo{
-			ID:       id,
+			ID:       uint64(id),
 			CartId:   cart.CartId(id),
 			Path:     p,
 			Size:     info.Size(),