diff --git a/src/lib/arch/win32/ArchTaskBarWindows.cpp b/src/lib/arch/win32/ArchTaskBarWindows.cpp
index 3ec3b21b..61376674 100644
--- a/src/lib/arch/win32/ArchTaskBarWindows.cpp
+++ b/src/lib/arch/win32/ArchTaskBarWindows.cpp
@@ -39,10 +39,14 @@ static const UINT        kFirstReceiverID = WM_USER + 14;
 ArchTaskBarWindows*    ArchTaskBarWindows::s_instance    = NULL;
 
 ArchTaskBarWindows::ArchTaskBarWindows() :
-    m_nextID(kFirstReceiverID),
-    m_thread(NULL),
+    m_mutex(NULL),
     m_condVar(NULL),
-    m_mutex(NULL)
+    m_ready(false),
+    m_result(0),
+    m_thread(NULL),
+    m_hwnd(NULL),
+    m_taskBarRestart(0),
+    m_nextID(kFirstReceiverID)
 {
     // save the singleton instance
     s_instance    = this;