diff --git a/README.md b/README.md
index e6b255f..4c0246e 100644
--- a/README.md
+++ b/README.md
@@ -313,7 +313,7 @@ In the above configuration strings:
   - `vrs_out`: SBS-format output
   - `uat_in`: "special" RAW format input as generated by the `dump978` container on port 30978. It is advisable to use this protocol and port to get UAT data from dump978, for example: `- ULTRAFEEDER_CONFIG=adsb,dump978,30978,uat_in`
 - `uuid` is a Universally Unique Identifier. You can reuse the one you generated for AdsbExchange, or you can generate a new one with this Linux command: `cat /proc/sys/kernel/random/uuid`. If omitted, it will use the `UUID` environment parameter, or if that one doesn't exist, it will leave the field empty.
-- `name` is a friendly name (containing any character of the set \[A-Za-z0-9_-\]) that will be sent to the MLAT Server, used to identify the station by name. If omitted, it will use the `MLAT_USER` parameter, or if that one doesn't exist, it will leave the field empty.
+- `name` is a friendly name (containing any character of the set \[A-Za-z0-9_-\] - do not use any spaces, quotes, or other non-alphanumeric characters!) that will be sent to the MLAT Server, used to identify the station by name. If omitted, it will use the `MLAT_USER` parameter, or if that one doesn't exist, it will leave the field empty.
 
 ##### Networking parameters
 
@@ -339,7 +339,6 @@ There are several aggregators, both non-profit and commercial, that can directly
 | ADSB Exchange   | C                              | Large aggregator owned by JetNet                          | adsb:`feed1.adsbexchange.com` port `30004`<br/>mlat: `feed.adsbexchange.com` port `31090`  |
 | RadarPlane      | N                              | Run by a few volunteers in Canada and Portugal            | adsb: `feed.radarplane.com` port `30001`<br/>mlat: `feed.radarplane.com` port `31090`      |
 | Fly Italy ADSB  | N                              | Run by a few ADSB enthusiasts in Italy                    | adsb: `dati.flyitalyadsb.com` port `4905`<br/>mlat: `dati.flyitalyadsb.com` port `30100`   |
-| Het Luchtruim   | N                              | Run by a private individual in the Netherlands.<br/>Please only feed if you are in the Netherlands or close to its borders. | adsb: `feed.hetluchtruim.nl` port `9000`<br/>mlat: in the near future |
 
 When feeding AdsbExchange, Ultrafeeder will send statistics to adsbexchange.com by default. See the description of the `ADSBX_STATS` parameter on how to disable this.
 
@@ -403,7 +402,7 @@ It will create a separate instance of `mlat-client` for each defined MLAT server
            mlat,mlat-server1.com,port1,return_port1,uuid=1234-5678-90123,inputconnect=remote_receiver1:30005,lat=12.3456,lon=45.6789,alt=18m,--arg1 hello --arg2 world;
            mlat,mlat-server2.com,port2,return_port2,uuid=5678-9012-34567,inputconnect=remote_receiver2:30005,-lat=12.3456,lon=45.6789,alt=18m,--arg1 hello-again --arg2 universe
     ...
-      - MLAT_USER=some_friendly_user_name
+      - MLAT_USER=some_friendly_user_name_using_only_alphanumeric_characters_without_spaces_or_quotes
 ```
 
 where:
@@ -423,7 +422,7 @@ where:
 
 Note - the optional parameters can be given in any order.
 
-The `MLAT_USER` parameter is passed to the MLAT Client and server, and will show up as a "friendly" name on MLAT related stats at your MLAT aggregator.
+The `MLAT_USER` parameter is passed to the MLAT Client and server, and will show up as a "friendly" name on MLAT related stats at your MLAT aggregator. This parameter can only contain alphanumeric (a-z, A-Z, 0-9) characters, dashes (-), or underscores (_). 
 
 #### Configuring the built-in MLAT Hub