diff --git a/src/msw/dialup.cpp b/src/msw/dialup.cpp
index d02781f6dc..d0163f9dde 100644
--- a/src/msw/dialup.cpp
+++ b/src/msw/dialup.cpp
@@ -1087,7 +1087,7 @@ bool wxDialUpManagerMSW::EnableAutoCheckOnlineStatus(size_t nSeconds)
     {
         // create a hidden window to receive notification about connections
         // status change
-        extern wxChar wxPanelClassName[];
+        extern const wxChar *wxPanelClassName;
         ms_hwndRas = ::CreateWindow(wxPanelClassName, NULL,
                                     0, 0, 0, 0,
                                     0, NULL,