diff --git a/features/core.feature b/features/core.feature
index 19c729a3..22ac4dda 100644
--- a/features/core.feature
+++ b/features/core.feature
@@ -381,3 +381,12 @@ Feature: Manage WordPress installation
       Warning: Multisite constants could not be written to 'wp-config.php'. You may need to add them manually:
       """
     And the return code should be 0
+
+  Scenario: Convert to WordPress multisite without adding multisite constants to wp-config file
+    Given a WP install
+
+    When I run `wp core multisite-convert --skip-config`
+    Then STDOUT should contain:
+    """
+    Addition of multisite constants to 'wp-config.php' skipped. You need to add them manually:
+    """
diff --git a/src/Core_Command.php b/src/Core_Command.php
index 2024fa9e..094e2cc8 100644
--- a/src/Core_Command.php
+++ b/src/Core_Command.php
@@ -449,6 +449,9 @@ public function install( $args, $assoc_args ) {
 	 * [--subdomains]
 	 * : If passed, the network will use subdomains, instead of subdirectories. Doesn't work with 'localhost'.
 	 *
+	 * [--skip-config]
+	 * : Don't add multisite constants to wp-config.php.
+	 *
 	 * ## EXAMPLES
 	 *
 	 *     $ wp core multisite-convert