diff --git a/source/ubinstall-gtk.c b/source/ubinstall-gtk.c
index f16e13e..a5d042f 100644
--- a/source/ubinstall-gtk.c
+++ b/source/ubinstall-gtk.c
@@ -1984,7 +1984,9 @@ void yon_set_max_size_from_partition(GtkTreeView *table, GtkSpinButton *spin_siz
     GtkTreeIter iter;
     char *selected_size=NULL;
     if (gtk_tree_selection_get_selected(gtk_tree_view_get_selection(table),&model,&iter)){
-        gtk_tree_model_get(model,&iter,1,&selected_size,-1);
+        gtk_tree_model_get(model,&iter,2,&selected_size,-1);
+        if (yon_char_is_empty(selected_size))
+            gtk_tree_model_get(model,&iter,1,&selected_size,-1);
         if (!yon_char_is_empty(selected_size)){
             int size = gtk_combo_box_get_active(size_type);
             double cur_size = atof(selected_size);
diff --git a/ubinstall-gtk.glade b/ubinstall-gtk.glade
index d0ed9eb..9428d6c 100644
--- a/ubinstall-gtk.glade
+++ b/ubinstall-gtk.glade
@@ -3640,7 +3640,6 @@ installed.</property>
                                                 <property name="text" translatable="yes">0,0</property>
                                                 <property name="adjustment">adjustment1</property>
                                                 <property name="digits">1</property>
-                                                <signal name="changed" handler="on_toggle_button_switch_on" swapped="no"/>
                                               </object>
                                               <packing>
                                                 <property name="expand">False</property>