diff --git a/source/script.php b/source/script.php
index 0f4ee725..033637e5 100644
--- a/source/script.php
+++ b/source/script.php
@@ -812,6 +812,26 @@ class Pkg_MokowaasInstallerScript
 			$monitorParams = json_decode((string) $db->setQuery($query)->loadResult());
 			$baseUrl = rtrim($monitorParams->base_url ?? '', '/');
 
+			// Fall back to manifest XML default if not yet saved in params
+			if (empty($baseUrl))
+			{
+				$manifestFile = JPATH_PLUGINS . '/system/mokowaas_monitor/mokowaas_monitor.xml';
+
+				if (is_file($manifestFile))
+				{
+					$xml = simplexml_load_file($manifestFile);
+
+					if ($xml)
+					{
+						foreach ($xml->xpath('//field[@name="base_url"]') as $field)
+						{
+							$baseUrl = rtrim((string) $field['default'], '/');
+							break;
+						}
+					}
+				}
+			}
+
 			if (empty($baseUrl))
 			{
 				return;