diff --git a/wp-admin/includes/class-wp-importer.php b/wp-admin/includes/class-wp-importer.php
index e9dc496536..d59311e11d 100644
--- a/wp-admin/includes/class-wp-importer.php
+++ b/wp-admin/includes/class-wp-importer.php
@@ -281,6 +281,9 @@ class WP_Importer {
  */
 function get_cli_args( $param, $required = false ) {
 	$args = $_SERVER['argv'];
+	if ( ! is_array( $args ) ) {
+		$args = array();
+	}
 
 	$out = array();
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 2c90a89fc4..6f0ddb42cf 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-alpha-42770';
+$wp_version = '5.0-alpha-42771';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.