diff --git a/pantheon/src/main/java/tech/pegasys/pantheon/cli/DefaultCommandValues.java b/pantheon/src/main/java/tech/pegasys/pantheon/cli/DefaultCommandValues.java
index 81725b52ba..43b4f9d235 100644
--- a/pantheon/src/main/java/tech/pegasys/pantheon/cli/DefaultCommandValues.java
+++ b/pantheon/src/main/java/tech/pegasys/pantheon/cli/DefaultCommandValues.java
@@ -31,6 +31,7 @@ public interface DefaultCommandValues {
 
   String MANDATORY_PATH_FORMAT_HELP = "<PATH>";
   String MANDATORY_FILE_FORMAT_HELP = "<FILE>";
+  String MANDATORY_DIRECTORY_FORMAT_HELP = "<DIRECTORY>";
   String PANTHEON_HOME_PROPERTY_NAME = "pantheon.home";
   String DEFAULT_DATA_DIR_PATH = "./build/data";
   String MANDATORY_INTEGER_FORMAT_HELP = "<INTEGER>";
diff --git a/pantheon/src/main/java/tech/pegasys/pantheon/cli/operator/OperatorSubCommand.java b/pantheon/src/main/java/tech/pegasys/pantheon/cli/operator/OperatorSubCommand.java
index 5c2293e21d..be0dc4e9f5 100644
--- a/pantheon/src/main/java/tech/pegasys/pantheon/cli/operator/OperatorSubCommand.java
+++ b/pantheon/src/main/java/tech/pegasys/pantheon/cli/operator/OperatorSubCommand.java
@@ -14,6 +14,7 @@ package tech.pegasys.pantheon.cli.operator;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 import static java.nio.charset.StandardCharsets.UTF_8;
+import static tech.pegasys.pantheon.cli.DefaultCommandValues.MANDATORY_DIRECTORY_FORMAT_HELP;
 import static tech.pegasys.pantheon.cli.DefaultCommandValues.MANDATORY_FILE_FORMAT_HELP;
 import static tech.pegasys.pantheon.cli.DefaultCommandValues.MANDATORY_PATH_FORMAT_HELP;
 import static tech.pegasys.pantheon.cli.operator.OperatorSubCommand.COMMAND_NAME;
@@ -83,7 +84,8 @@ public class OperatorSubCommand implements Runnable {
 
   @Command(
       name = "generate-blockchain-config",
-      description = "This command generates blockchain network configuration files.",
+      description =
+          "This command generates node keypairs, genesis file (with RLP encoded IBFT 2.0 extra data).",
       mixinStandardHelpOptions = true)
   static class GenerateNetworkConfigSubCommand implements Runnable {
     @Option(
@@ -97,7 +99,7 @@ public class OperatorSubCommand implements Runnable {
     @Option(
         required = true,
         names = "--to",
-        paramLabel = MANDATORY_FILE_FORMAT_HELP,
+        paramLabel = MANDATORY_DIRECTORY_FORMAT_HELP,
         description = "Directory to write output files to.",
         arity = "1..1")
     private File outputDirectory = null;
diff --git a/pantheon/src/test/java/tech/pegasys/pantheon/cli/operator/OperatorSubCommandTest.java b/pantheon/src/test/java/tech/pegasys/pantheon/cli/operator/OperatorSubCommandTest.java
index 09d9a9f977..fa7601c46a 100644
--- a/pantheon/src/test/java/tech/pegasys/pantheon/cli/operator/OperatorSubCommandTest.java
+++ b/pantheon/src/test/java/tech/pegasys/pantheon/cli/operator/OperatorSubCommandTest.java
@@ -62,9 +62,9 @@ public class OperatorSubCommandTest extends CommandTestAbstract {
           + System.lineSeparator()
           + "Commands:"
           + System.lineSeparator()
-          + "  generate-blockchain-config  This command generates blockchain network"
+          + "  generate-blockchain-config  This command generates node keypairs, genesis"
           + System.lineSeparator()
-          + "                                configuration files.";
+          + "                                file (with RLP encoded IBFT 2.0 extra data).";
 
   private Path tmpOutputDirectoryPath;