diff --git a/libraries/cms/installer/adapter/component.php b/libraries/cms/installer/adapter/component.php
index ab6cd3c2e90d9..366c2d6f82173 100644
--- a/libraries/cms/installer/adapter/component.php
+++ b/libraries/cms/installer/adapter/component.php
@@ -631,6 +631,7 @@ protected function storeExtension($deleteExisting = false)
 			$this->extension->client_id = 1;
 			$this->extension->params    = $this->parent->getParams();
 			$this->extension->custom_data = '';
+			$this->extension->system_data = '';
 		}
 
 		$this->extension->manifest_cache = $this->parent->generateManifestCache();