diff --git a/Trigger/TrigMonitoring/TrigCostMonitor/src/TrigCostTool.cxx b/Trigger/TrigMonitoring/TrigCostMonitor/src/TrigCostTool.cxx
index d061b6db20326d2f01e1bba65e88e2c0542381c0..d6eb79e4dc2e677c40ee13baeb3680fd4c0140bc 100644
--- a/Trigger/TrigMonitoring/TrigCostMonitor/src/TrigCostTool.cxx
+++ b/Trigger/TrigMonitoring/TrigCostMonitor/src/TrigCostTool.cxx
@@ -41,7 +41,9 @@
 TrigCostTool::TrigCostTool(const std::string& type,
          const std::string& name,
          const IInterface* parent)
-  :AthAlgTool(type, name, parent), 
+  :AthAlgTool(type, name, parent),
+   m_appId(0),
+   m_appName(), 
    m_parentAlg(0),
    m_timer(0),
    m_timerSvc("TrigTimerSvc/TrigTimerSvc", name),