diff --git a/bundles/SystemBundle/Command/System/Compat/CompatCommand.php b/bundles/SystemBundle/Command/System/Compat/CompatCommand.php
new file mode 100644
index 00000000..e6c8991d
--- /dev/null
+++ b/bundles/SystemBundle/Command/System/Compat/CompatCommand.php
@@ -0,0 +1,112 @@
+<?php
+
+namespace SystemBundle\Command\System\Compat;
+
+use Windwalker\Console\Command\Command;
+use Windwalker\Filesystem\Folder;
+
+class CompatCommand extends Command
+{
+	/**
+	 * An enabled flag.
+	 *
+	 * @var bool
+	 */
+	public static $isEnabled = true;
+
+	/**
+	 * Property name.
+	 *
+	 * @var  string
+	 */
+	protected $name = 'compat';
+
+	/**
+	 * Property description.
+	 *
+	 * @var  string
+	 */
+	protected $description = 'Add compat helper file for IDE after Joomla 3.8.';
+
+	/**
+	 * Property usage.
+	 *
+	 * @var  string
+	 */
+	protected $usage = 'compat <cmd><folder></cmd> <option>[option]</option>';
+
+	/**
+	 * Property offline.
+	 *
+	 * @var  int
+	 */
+	protected $offline = 0;
+
+	/**
+	 * doExecute
+	 *
+	 * @return  void
+	 */
+	protected function doExecute()
+	{
+		$folder = $this->getArgument(0, 'tmp');
+
+		$path = JPATH_BASE . '/' . trim($folder, '/\\');
+
+		$path = realpath($path);
+
+		if (!$path)
+		{
+			Folder::create($path);
+		}
+
+		$this->out('Creating helper file...');
+
+		$aliases = \JLoader::getDeprecatedAliases();
+
+		$placeholders = [];
+
+		foreach ($aliases as $alias)
+		{
+			$version = $alias['version'];
+
+			if (version_compare(JVERSION, $version, '>='))
+			{
+				continue;
+			}
+
+			$placeholders[] = $this->getTemplate($alias['old'], $alias['new']);
+		}
+
+		$placeholders = "<?php\n\n" . implode("\n\n", $placeholders);
+
+		file_put_contents($path . '/compat.php', $placeholders);
+
+		$this->out(sprintf('File: %s created.', $path . '/compat.php'));
+
+		return;
+	}
+
+	/**
+	 * getTemplate
+	 *
+	 * @param string $class
+	 * @param string $targetClass
+	 *
+	 * @return  string
+	 */
+	protected function getTemplate($class, $targetClass)
+	{
+		$class = ucfirst($class);
+
+		return <<<PHP
+if (!class_exists('$class'))
+{
+	/**
+	 * @deprecated  This class is only a placeholder.
+	 */
+	class $class extends $targetClass {}
+}
+PHP;
+	}
+}
diff --git a/bundles/SystemBundle/Command/System/SystemCommand.php b/bundles/SystemBundle/Command/System/SystemCommand.php
index 762b53ae..46bca18e 100644
--- a/bundles/SystemBundle/Command/System/SystemCommand.php
+++ b/bundles/SystemBundle/Command/System/SystemCommand.php
@@ -3,6 +3,7 @@
 namespace SystemBundle\Command\System;
 
 use SystemBundle\Command\System\CleanCache\ClearCacheCommand;
+use SystemBundle\Command\System\Compat\CompatCommand;
 use SystemBundle\Command\System\Off\OffCommand;
 use SystemBundle\Command\System\On\OnCommand;
 use Windwalker\Console\Command\Command;
@@ -42,5 +43,6 @@ protected function initialise()
 		$this->addCommand(new ClearCacheCommand);
 		$this->addCommand(new OnCommand);
 		$this->addCommand(new OffCommand);
+		$this->addCommand(new CompatCommand);
 	}
 }