diff --git a/includes/functions.php b/includes/functions.php
index 8c7c41a83dfee5cae2aea41f170b198932e30fd1..08e270e5b11cf328b3c89a5c4a47a43c27fc81f1 100644
--- a/includes/functions.php
+++ b/includes/functions.php
@@ -128,6 +128,8 @@ function get_command_blacklist() {
 /**
  * Splits positional args from associative args.
  *
+ * Adapted from `WP_CLI\Configurator\extract_assoc()`.
+ *
  * @param array|string $command String or array of command to parse.
  * @return array|WP_Error
  */