diff --git a/src/common/datetime.cpp b/src/common/datetime.cpp
index 6751dd2ad9..6c87ccc236 100644
--- a/src/common/datetime.cpp
+++ b/src/common/datetime.cpp
@@ -222,16 +222,6 @@ const wxDateTime wxDefaultDateTime;
 
 wxDateTime::Country wxDateTime::ms_country = wxDateTime::Country_Unknown;
 
-// ----------------------------------------------------------------------------
-// private globals
-// ----------------------------------------------------------------------------
-
-// a critical section is needed to protect GetTimeZone() static
-// variable in MT case
-#if wxUSE_THREADS
-    static wxCriticalSection gs_critsectTimezone;
-#endif // wxUSE_THREADS
-
 // ----------------------------------------------------------------------------
 // private functions
 // ----------------------------------------------------------------------------
@@ -273,8 +263,6 @@ static int GetTimeZone()
     static long gmtoffset = LONG_MAX; // invalid timezone
 #endif
 
-    wxCRIT_SECT_LOCKER(lock, gs_critsectTimezone);
-
     // ensure that the timezone variable is set by calling localtime
     if ( !s_timezoneSet )
     {