diff --git a/src/Mount/MainCom.cpp b/src/Mount/MainCom.cpp
index b527d428..e6945781 100644
--- a/src/Mount/MainCom.cpp
+++ b/src/Mount/MainCom.cpp
@@ -302,6 +302,8 @@ extern "C" int UacChangePwd (char *lpszVolume, Password *oldPassword, int old_pk
 	CComPtr<ITrueCryptMainCom> tc;
 	int r;
 
+	CoInitialize (NULL);
+
 	if (ComGetInstance (hwndDlg, &tc))
 	{
 		WaitCursor ();
@@ -320,5 +322,7 @@ extern "C" int UacChangePwd (char *lpszVolume, Password *oldPassword, int old_pk
 	else
 		r = -1;
 
+	CoUninitialize ();
+
 	return r;
 }