--- a/ui/gtk/objs.mk	Tue Jan 26 20:06:16 2016 +0100
+++ b/ui/gtk/objs.mk	Wed Jan 27 12:10:42 2016 +0100
@@ -42,6 +42,7 @@
 GTKOBJ += tree.o
 GTKOBJ += image.o
 GTKOBJ += graphics.o
+GTKOBJ += range.o
 
 TOOLKITOBJS += $(GTKOBJ:%=$(GTK_OBJPRE)%)
 TOOLKITSOURCE += $(GTKOBJ:%.o=gtk/%.c)