diff --git a/src/frontends/qt4/GuiPrefs.cpp b/src/frontends/qt4/GuiPrefs.cpp
index 4f96241485..7219c721cf 100644
--- a/src/frontends/qt4/GuiPrefs.cpp
+++ b/src/frontends/qt4/GuiPrefs.cpp
@@ -2155,7 +2155,7 @@ PrefUserInterface::PrefUserInterface(GuiPreferences * form)
 	connect(openDocumentsInTabsCB, SIGNAL(clicked()),
 		this, SIGNAL(changed()));
 #if QT_VERSION < 0x040500
-	openDocumentsInTabsCB.setEnabled(false);
+	openDocumentsInTabsCB->setEnabled(false);
 #endif
 	connect(singleCloseTabButtonCB, SIGNAL(clicked()),
 		this, SIGNAL(changed()));