diff --git a/composer.json b/composer.json
index 8737eaab..9b312087 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
     },
     "require-dev": {
         "wp-cli/entity-command": "^1.3 || ^2",
-        "wp-cli/wp-cli-tests": "^3.1"
+        "wp-cli/wp-cli-tests": "^4"
     },
     "config": {
         "process-timeout": 7200,
diff --git a/src/Super_Admin_Command.php b/src/Super_Admin_Command.php
index fb0ece09..66f695d2 100644
--- a/src/Super_Admin_Command.php
+++ b/src/Super_Admin_Command.php
@@ -117,7 +117,7 @@ public function add( $args, $_ ) {
 
 			$new_super_admins[] = $user->ID;
 			$super_admins[]     = $user->user_login;
-			$successes++;
+			++$successes;
 		}
 
 		if ( count( $super_admins ) === $num_super_admins ) {
@@ -127,18 +127,16 @@ public function add( $args, $_ ) {
 			} else {
 				WP_CLI::success( 'Super admins remain unchanged.' );
 			}
-		} else {
-			if ( update_site_option( 'site_admins', $super_admins ) ) {
-				if ( $errors ) {
-					$user_count = count( $args );
-					WP_CLI::error( "Only granted super-admin capabilities to {$successes} of {$user_count} users." );
-				} else {
-					$message = $successes > 1 ? 'users' : 'user';
-					WP_CLI::success( "Granted super-admin capabilities to {$successes} {$message}." );
-				}
+		} elseif ( update_site_option( 'site_admins', $super_admins ) ) {
+			if ( $errors ) {
+				$user_count = count( $args );
+				WP_CLI::error( "Only granted super-admin capabilities to {$successes} of {$user_count} users." );
 			} else {
-				WP_CLI::error( 'Site options update failed.' );
+				$message = $successes > 1 ? 'users' : 'user';
+				WP_CLI::success( "Granted super-admin capabilities to {$successes} {$message}." );
 			}
+		} else {
+			WP_CLI::error( 'Site options update failed.' );
 		}
 
 		foreach ( $new_super_admins as $user_id ) {
diff --git a/super-admin-command.php b/super-admin-command.php
index c80bd228..ccdd03dc 100644
--- a/super-admin-command.php
+++ b/super-admin-command.php
@@ -4,7 +4,7 @@
 	return;
 }
 
-$wpcli_super_admin_autoloader = dirname( __FILE__ ) . '/vendor/autoload.php';
+$wpcli_super_admin_autoloader = __DIR__ . '/vendor/autoload.php';
 if ( file_exists( $wpcli_super_admin_autoloader ) ) {
 	require_once $wpcli_super_admin_autoloader;
 }