diff --git a/gtk/gtkprintoperation-unix.c b/gtk/gtkprintoperation-unix.c
index 19e5644f1d..a9b41437c4 100644
--- a/gtk/gtkprintoperation-unix.c
+++ b/gtk/gtkprintoperation-unix.c
@@ -549,6 +549,10 @@ finish_print (PrintResponseData *rdata,
 	if (gtk_printer_get_hard_margins (printer, &top, &bottom, &left, &right))
 	  _gtk_print_context_set_hard_margins (priv->print_context, top, bottom, left, right);
       } else {
+        /* Pages do not have any unprintable area when printing n-up as each page on the
+         * sheet has been scaled down and translated to a position within the printable
+         * area of the sheet.
+         */
 	_gtk_print_context_set_hard_margins (priv->print_context, 0, 0, 0, 0);
       }