diff --git a/phpBB/phpbb/extension/manager.php b/phpBB/phpbb/extension/manager.php
index e7e5f83c23..7045624f28 100644
--- a/phpBB/phpbb/extension/manager.php
+++ b/phpBB/phpbb/extension/manager.php
@@ -227,6 +227,8 @@ class manager
 		if ($active)
 		{
 			$this->config->increment('assets_version', 1);
+
+			$this->update_template_paths($name, $this->container->get('template'));
 		}
 
 		return !$active;
@@ -589,4 +591,38 @@ class manager
 		}
 		return $finder;
 	}
+
+	/**
+	* Make the template aware of ACP template events of a newly enabled extension
+	*
+	* @param string						$name		The extension's name
+	* @param \phpbb\template\base|null	$template	The template service
+	* @return null
+	*/
+	protected function update_template_paths($name, \phpbb\template\base $template = null)
+	{
+		if ($template instanceof \phpbb\template\base)
+		{
+			$possible_paths = array(
+				$this->phpbb_root_path . 'ext/' . $name . '/adm/style',
+				$this->phpbb_root_path . 'ext/' . $name . '/styles',
+			);
+
+			$paths = array_filter($possible_paths, 'is_dir');
+
+			if ($paths)
+			{
+				$names = array(
+					array(
+						'name' 		=> 'adm',
+						'ext_path' 	=> 'adm/style/',
+					),
+				);
+
+				$paths[] = $this->phpbb_root_path . 'adm/style';
+
+				$template->set_custom_style($names, $paths);
+			}
+		}
+	}
 }