diff --git a/gtk/gtk-builder-tool.c b/gtk/gtk-builder-tool.c
index 63bcc7f987..24171abce6 100644
--- a/gtk/gtk-builder-tool.c
+++ b/gtk/gtk-builder-tool.c
@@ -186,6 +186,7 @@ needs_explicit_setting (MyParserData *data,
     { "GtkCalendar", "year", 0 },
     { "GtkCalendar", "month", 0 },
     { "GtkCalendar", "day", 0 },
+    { "GtkDialog", "border-width", 0 },
     { "GtkPlacesSidebar", "show-desktop", 0 },
     { "GtkRadioButton", "draw-indicator", 0 },
     { "GtkGrid", "left-attach", 1 },