diff --git a/modules/printbackends/cups/gtkcupsutils.c b/modules/printbackends/cups/gtkcupsutils.c
index 1023da09e6..d7c5b7cce0 100644
--- a/modules/printbackends/cups/gtkcupsutils.c
+++ b/modules/printbackends/cups/gtkcupsutils.c
@@ -1406,7 +1406,7 @@ _get_read_data (GtkCupsRequest *request)
 #endif /* HAVE_CUPS_API_1_2 */
 
   GTK_NOTE (PRINTING,
-            g_print ("CUPS Backend: %i bytes read\n", bytes));
+            g_print ("CUPS Backend: %"G_GSIZE_FORMAT" bytes read\n", bytes));
   
   if (bytes == 0)
     {
diff --git a/modules/printbackends/cups/gtkprintbackendcups.c b/modules/printbackends/cups/gtkprintbackendcups.c
index c2308591b6..62deac4bcb 100644
--- a/modules/printbackends/cups/gtkprintbackendcups.c
+++ b/modules/printbackends/cups/gtkprintbackendcups.c
@@ -317,7 +317,7 @@ _cairo_write_to_cups (void                *closure,
 	}    
 
       GTK_NOTE (PRINTING,
-                g_print ("CUPS Backend: Wrote %i bytes to temp file\n", written));
+                g_print ("CUPS Backend: Wrote %"G_GSIZE_FORMAT" bytes to temp file\n", written));
 
       data += written;
       length -= written;