diff --git a/test-network/addOrg4/README.md b/test-network/addOrg4/README.md
index 82b1e8ac..0923f238 100644
--- a/test-network/addOrg4/README.md
+++ b/test-network/addOrg4/README.md
@@ -1,28 +1,28 @@
-## Adding Org3 to the test network
+## Adding Org4 to the test network
 
-You can use the `addOrg3.sh` script to add another organization to the Fabric test network. The `addOrg3.sh` script generates the Org3 crypto material, creates an Org3 organization definition, and adds Org3 to a channel on the test network.
+You can use the `addOrg4.sh` script to add another organization to the Fabric test network. The `addOrg4.sh` script generates the Org4 crypto material, creates an Org4 organization definition, and adds Org4 to a channel on the test network.
 
-You first need to run `./network.sh up createChannel` in the `test-network` directory before you can run the `addOrg3.sh` script.
+You first need to run `./network.sh up createChannel` in the `test-network` directory before you can run the `addOrg4.sh` script.
 
 ```
 ./network.sh up createChannel
-cd addOrg3
-./addOrg3.sh up
+cd addOrg4
+./addOrg4.sh up
 ```
 
-If you used `network.sh` to create a channel other than the default `mychannel`, you need pass that name to the `addorg3.sh` script.
+If you used `network.sh` to create a channel other than the default `mychannel`, you need pass that name to the `addorg4.sh` script.
 ```
 ./network.sh up createChannel -c channel1
-cd addOrg3
-./addOrg3.sh up -c channel1
+cd addOrg4
+./addOrg4.sh up -c channel1
 ```
 
-You can also re-run the `addOrg3.sh` script to add Org3 to additional channels.
+You can also re-run the `addOrg4.sh` script to add Org4 to additional channels.
 ```
 cd ..
 ./network.sh createChannel -c channel2
-cd addOrg3
-./addOrg3.sh up -c channel2
+cd addOrg4
+./addOrg4.sh up -c channel2
 ```
 
-For more information, use `./addOrg3.sh -h` to see the `addOrg3.sh` help text.
+For more information, use `./addOrg4.sh -h` to see the `addOrg4.sh` help text.