diff --git a/slic/gui/gui.py b/slic/gui/gui.py
index 628a7946..295946a4 100644
--- a/slic/gui/gui.py
+++ b/slic/gui/gui.py
@@ -21,6 +21,7 @@ def run(*args, **kwargs):
     frame = DAQFrame(*args, **kwargs)
     frame.Show()
     app.MainLoop()
+    app.Yield() #TODO: without this, wxPython segfaults locking a mutex