diff --git a/include/wx/msw/tooltip.h b/include/wx/msw/tooltip.h
index 13fdd0069d..667e6eec3e 100644
--- a/include/wx/msw/tooltip.h
+++ b/include/wx/msw/tooltip.h
@@ -40,7 +40,7 @@ public:
     // -------------------------------
 
     // should be called in responde to WM_MOUSEMOVE
-    void RelayEvent(WXMSG *msg);
+    static void RelayEvent(WXMSG *msg);
 
     // add a window to the tooltip control
     void Add(WXHWND hwnd);
diff --git a/src/msw/tooltip.cpp b/src/msw/tooltip.cpp
index 84f9a38084..8fde93e577 100644
--- a/src/msw/tooltip.cpp
+++ b/src/msw/tooltip.cpp
@@ -194,6 +194,7 @@ void wxToolTip::SetDelay(long milliseconds)
 // ---------------------------------------------------------------------------
 
 // create the tooltip ctrl for our parent frame if it doesn't exist yet
+/* static */
 WXHWND wxToolTip::GetToolTipCtrl()
 {
     if ( !ms_hwndTT )
@@ -222,6 +223,7 @@ WXHWND wxToolTip::GetToolTipCtrl()
     return ms_hwndTT;
 }
 
+/* static */
 void wxToolTip::RelayEvent(WXMSG *msg)
 {
     (void)SendTooltipMessage(GetToolTipCtrl(), TTM_RELAYEVENT, msg);