diff -u -r gnome-nettool-3.8.0/src/info.c gnome-nettool-3.8.0-printf/src/info.c
--- gnome-nettool-3.8.0/src/info.c	2013-05-02 13:58:40.000000000 +0200
+++ gnome-nettool-3.8.0-printf/src/info.c	2013-05-03 05:20:04.684921458 +0200
@@ -232,13 +232,13 @@
 	text_rx_bytes = util_legible_bytes (netload.bytes_in);
 	text_tx_bytes = util_legible_bytes (netload.bytes_out);
 
-	g_sprintf (rx_pkt, "%lld", netload.packets_in);
-	g_sprintf (tx_pkt, "%lld", netload.packets_out);
+	g_sprintf (rx_pkt, "%" G_GUINT64_FORMAT, netload.packets_in);
+	g_sprintf (tx_pkt, "%" G_GUINT64_FORMAT, netload.packets_out);
 
-	g_sprintf (rx_error, "%lld", netload.errors_in);
-	g_sprintf (tx_error, "%lld", netload.errors_out);
+	g_sprintf (rx_error, "%" G_GUINT64_FORMAT, netload.errors_in);
+	g_sprintf (tx_error, "%" G_GUINT64_FORMAT, netload.errors_out);
 
-	g_sprintf (collisions, "%lld", netload.collisions);
+	g_sprintf (collisions, "%" G_GUINT64_FORMAT, netload.collisions);
 	
 	gtk_label_set_text (GTK_LABEL (info->tx_bytes), text_tx_bytes);
 	gtk_label_set_text (GTK_LABEL (info->tx), tx_pkt);
diff -u -r gnome-nettool-3.8.0/src/utils.c gnome-nettool-3.8.0-printf/src/utils.c
--- gnome-nettool-3.8.0/src/utils.c	2013-05-02 13:58:40.000000000 +0200
+++ gnome-nettool-3.8.0-printf/src/utils.c	2013-05-03 05:21:45.704202804 +0200
@@ -272,7 +272,7 @@
 	    unit = "KiB";
 	}
 	
-	result = g_strdup_printf ("%lld.%lld %s", short_rx / 10,
+	result = g_strdup_printf ("%" G_GUINT64_FORMAT ".%" G_GUINT64_FORMAT " %s", short_rx / 10,
                                   short_rx % 10, unit);
 	return result;	
 }
