diff --git a/test/stressGUI.cxx b/test/stressGUI.cxx
index 751df73f16796ef230f5924e9fdbb87ed001febe..841b230716531c63d73848dcf4e229347afa8bc6 100644
--- a/test/stressGUI.cxx
+++ b/test/stressGUI.cxx
@@ -411,7 +411,7 @@ void ProcessFrame(TGFrame *f, const char *title)
 {
    // Save a capture of frame f in a png file.
 
-   gClient->HandleInput();
+   gSystem->ProcessEvents();
    gSystem->Sleep(250);
    gSystem->ProcessEvents();
    gErrorIgnoreLevel = 9999;