diff --git a/README.md b/README.md
index 5178704..7aba633 100644
--- a/README.md
+++ b/README.md
@@ -137,7 +137,7 @@ It is highly recommended you set the following environment values before startin
 | RCON_PORT          | RCON port to connect to                                                                                                                                                                             | 25575          | 1024-65535                                                                                                 |
 | QUERY_PORT         | Query port used to communicate with Steam servers                                                                                                                                                   | 27015          | 1024-65535                                                                                                 |
 | DELETE_OLD_BACKUPS | Delete backups after a certain number of days                                                                                                                                                       | false          | true/false                                                                                                 |
-| OLD_BACKUP_DAYS    | How many days to keep backups                                                                                                                                                                       |                | any positive integer                                                                                       |
+| OLD_BACKUP_DAYS    | How many days to keep backups                                                                                                                                                                       | 30             | any positive integer                                                                                       |
 
 *highly recommended to set