diff --git a/src/frontends/qt4/GuiPrefs.cpp b/src/frontends/qt4/GuiPrefs.cpp
index e68968d981..66614a61dd 100644
--- a/src/frontends/qt4/GuiPrefs.cpp
+++ b/src/frontends/qt4/GuiPrefs.cpp
@@ -274,6 +274,8 @@ PrefInput::PrefInput(GuiPreferences * form, QWidget * parent)
 		this, SIGNAL(changed()));
 	connect(popupTextCB, SIGNAL(clicked()),
 		this, SIGNAL(changed()));
+	connect(popupAfterCompleteCB, SIGNAL(clicked()),
+		this, SIGNAL(changed()));
 	connect(mouseWheelSpeedSB, SIGNAL(valueChanged(double)),
 		this, SIGNAL(changed()));
 }