diff --git a/src/frontends/qt4/GuiErrorList.cpp b/src/frontends/qt4/GuiErrorList.cpp
index 0907c6164b..7308602317 100644
--- a/src/frontends/qt4/GuiErrorList.cpp
+++ b/src/frontends/qt4/GuiErrorList.cpp
@@ -58,7 +58,7 @@ namespace lyx {
 namespace frontend {
 
 GuiErrorList::GuiErrorList(GuiView & lv)
-	: GuiDialog(lv, "errorlist", qt_("Error List")), from_master_(false)
+	: GuiDialog(lv, "errorlist", qt_("Error List")), buf_(0), from_master_(false)
 {
 	setupUi(this);