diff --git a/server/src/main/kotlin/ir/armor/tachidesk/impl/backup/legacy/LegacyBackupExport.kt b/server/src/main/kotlin/ir/armor/tachidesk/impl/backup/legacy/LegacyBackupExport.kt
index 462bae0..e658745 100644
--- a/server/src/main/kotlin/ir/armor/tachidesk/impl/backup/legacy/LegacyBackupExport.kt
+++ b/server/src/main/kotlin/ir/armor/tachidesk/impl/backup/legacy/LegacyBackupExport.kt
@@ -137,7 +137,7 @@ object LegacyBackupExport : LegacyBackupBase() {
     }
 
     private fun backupCategories(root: JsonArray) {
-        val categories = getCategoryList().map{
+        val categories = getCategoryList().map {
             CategoryImpl().apply {
                 name = it.name
                 order = it.order