diff --git a/server/lib/classes/monitor_tools.inc.php b/server/lib/classes/monitor_tools.inc.php
index 1e33ea7f7edfa26171171f0f45cb97177d35389f..5ab5117e1aa0697ddd2b037638824b686a3d2148 100644
--- a/server/lib/classes/monitor_tools.inc.php
+++ b/server/lib/classes/monitor_tools.inc.php
@@ -1070,6 +1070,7 @@ class monitor_tools {
 	}
 
 	public function monitorSysLog() {
+		global $app;
 		global $conf;
 
 		/* the id of the server as int */
diff --git a/server/mods-available/monitor_core_module.inc.php b/server/mods-available/monitor_core_module.inc.php
index 4a6d3415b6b935655d495dc03ac2e948744a449c..9244b051636f6db372dad283250212d7e4641526 100644
--- a/server/mods-available/monitor_core_module.inc.php
+++ b/server/mods-available/monitor_core_module.inc.php
@@ -76,6 +76,7 @@ class monitor_core_module {
 	 */
 	// TODO: what monitoring is done should be a config-var
 	private function _doMonitor() {
+		global $app;
 		/*
 		 * We need the tools in almost every method, so initialize them once...
 		 */