diff --git a/README.md b/README.md
index 6cd0a858..747e4edc 100644
--- a/README.md
+++ b/README.md
@@ -218,7 +218,7 @@ Only 64-bit operating systems are supported
     "Bucket": "<my bucket name>",
     "EncryptionToken": "",
     "Region": "any",
-    "SecretKey": "<my secret_key key>",
+    "SecretKey": "<my secret key>",
     "TimeoutMs": 60000,
     "URL": "http://localhost:9000",
     "UsePathStyle": true,
@@ -280,6 +280,9 @@ active, so it is recommended to unmount beforehand.
     * S3:
       * `repertory -s3 --name '<my config name>' -set RemoteMount.Port 20000`
 
+IMPORTANT: Be sure to configure your firewall to allow incoming TCP connections
+on the port configured in `RemoteMount.Port`.
+
 #### Remote mount portion of configuration file
 
 ```json