diff --git a/src/gtk/checklst.cpp b/src/gtk/checklst.cpp
index 4a43959036..d3fe708a63 100644
--- a/src/gtk/checklst.cpp
+++ b/src/gtk/checklst.cpp
@@ -87,7 +87,7 @@ void wxCheckListBox::DoCreateCheckList()
         gtk_tree_view_column_new_with_attributes( "", renderer,
                                                   "active", 0,
                                                   NULL );
-    gtk_tree_view_column_set_fixed_width(column, 20);
+    gtk_tree_view_column_set_fixed_width(column, 22);
     gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
     gtk_tree_view_column_set_clickable(column, TRUE);