diff --git a/pykd/dbgeventcb.cpp b/pykd/dbgeventcb.cpp
index dbb065a..73d0450 100644
--- a/pykd/dbgeventcb.cpp
+++ b/pykd/dbgeventcb.cpp
@@ -10,7 +10,37 @@
 
 /////////////////////////////////////////////////////////////////////////////////
 
-DbgEventCallbacks *dbgEventCallbacks = NULL;
+DbgEventCallbacks *DbgEventCallbacks::dbgEventCallbacks = NULL;
+
+/////////////////////////////////////////////////////////////////////////////////
+
+HRESULT DbgEventCallbacks::Start()
+{
+    HRESULT hres;
+    try
+    {
+        Stop();
+        dbgEventCallbacks = new DbgEventCallbacks;
+        hres = S_OK;
+    }
+    catch (HRESULT _hres)
+    {
+        hres = _hres;
+    }
+    catch (...)
+    {
+        hres = E_OUTOFMEMORY;
+    }
+    return hres;
+}
+
+/////////////////////////////////////////////////////////////////////////////////
+
+void DbgEventCallbacks::Stop()
+{
+    if (dbgEventCallbacks)
+        dbgEventCallbacks->Deregister();
+}
 
 /////////////////////////////////////////////////////////////////////////////////
 
diff --git a/pykd/dbgeventcb.h b/pykd/dbgeventcb.h
index eb9863f..08e4989 100644
--- a/pykd/dbgeventcb.h
+++ b/pykd/dbgeventcb.h
@@ -6,12 +6,15 @@ class DbgEventCallbacks : public DebugBaseEventCallbacks
 {
 public:
 
+    static HRESULT Start();
+    static void Stop();
+
+private:
+
     // may generate HRESULT exception if not registered
     DbgEventCallbacks();
     void Deregister();
 
-private:
-
     /////////////////////////////////////////////////////////////////////////////////
     // IUnknown interface implementation
 
@@ -42,11 +45,11 @@ private:
 
     IDebugClient *m_dbgClient;
     IDebugSymbols3 *m_dbgSymbols3;
+
+    /////////////////////////////////////////////////////////////////////////////////
+    // global singleton
+
+    static DbgEventCallbacks *dbgEventCallbacks;
+
+    /////////////////////////////////////////////////////////////////////////////////
 };
-
-/////////////////////////////////////////////////////////////////////////////////
-// global singleton
-
-extern DbgEventCallbacks *dbgEventCallbacks;
-
-/////////////////////////////////////////////////////////////////////////////////
diff --git a/pykd/dbgext.cpp b/pykd/dbgext.cpp
index 1f81a92..6ee2ab6 100644
--- a/pykd/dbgext.cpp
+++ b/pykd/dbgext.cpp
@@ -227,7 +227,7 @@ VOID
 CALLBACK
 DebugExtensionUninitialize()
 {
-    stopDbgEventMonotoring();
+    DbgEventCallbacks::Stop();
 
     delete windbgGlobalSession;
     windbgGlobalSession = NULL;
diff --git a/pykd/dbgsession.h b/pykd/dbgsession.h
index 21a4d16..64f9d5b 100644
--- a/pykd/dbgsession.h
+++ b/pykd/dbgsession.h
@@ -6,29 +6,9 @@ dbgCreateSession();
 extern
 bool    dbgSessionStarted;
 
-inline void stopDbgEventMonotoring()
-{
-    if (dbgEventCallbacks)
-        dbgEventCallbacks->Deregister();
-}
-
 inline HRESULT setDbgSessionStarted()
 {
-    HRESULT hres;
-    try
-    {
-        stopDbgEventMonotoring();
-        dbgEventCallbacks = new DbgEventCallbacks;
-        hres = S_OK;
-    }
-    catch (HRESULT _hres)
-    {
-        hres = _hres;
-    }
-    catch (...)
-    {
-        hres = E_OUTOFMEMORY;
-    }
+    HRESULT hres = DbgEventCallbacks::Start();
     if (SUCCEEDED(hres))
         dbgSessionStarted = true;
     return hres;