diff --git a/src/qtui.h b/src/qtui.h
@@ -40,6 +40,7 @@ extern int MyMessageBox(const std::string& message, const std::string& caption="
 #define wxMessageBox  MyMessageBox
 extern int ThreadSafeMessageBox(const std::string& message, const std::string& caption, int style=wxOK, wxWindow* parent=NULL, int x=-1, int y=-1);
 extern bool ThreadSafeAskFee(int64 nFeeRequired, const std::string& strCaption, wxWindow* parent);
+extern void ThreadSafeHandleURL(const std::string& strURL);
 extern void CalledSetStatusBar(const std::string& strText, int nField);
 extern void UIThreadCall(boost::function0<void> fn);
 extern void MainFrameRepaint();