diff --git a/MSICALib/MSICALib.cpp b/MSICALib/MSICALib.cpp
index 7492493..aabdc23 100644
--- a/MSICALib/MSICALib.cpp
+++ b/MSICALib/MSICALib.cpp
@@ -188,6 +188,7 @@ HRESULT COpList::Execute(CSession *pSession)
 ////////////////////////////////////////////////////////////////////////////
 
 CSession::CSession() :
+    m_hInstall(NULL),
     m_bContinueOnError(FALSE),
     m_bRollbackEnabled(FALSE)
 {