diff --git a/include/wx/longlong.h b/include/wx/longlong.h
index b90bd71873..de468676fd 100644
--- a/include/wx/longlong.h
+++ b/include/wx/longlong.h
@@ -411,11 +411,7 @@ public:
     }
 
         // convert to double
-#ifdef _MSC_VER
-    double ToDouble() const { return wx_truncate_cast(double, (__int64) m_ll); }
-#else
     double ToDouble() const { return wx_truncate_cast(double, m_ll); }
-#endif
 
     // operations
         // addition