diff --git a/phpBB/adm/style/install_update_diff.html b/phpBB/adm/style/install_update_diff.html
index 96bf2532b1..e57d19161d 100644
--- a/phpBB/adm/style/install_update_diff.html
+++ b/phpBB/adm/style/install_update_diff.html
@@ -156,7 +156,6 @@ table.hrdiff tbody td {
 table.hrdiff td pre {
 	font-family: "Consolas", monospace;
 	font-size: 1.1em;
-	overflow-x: auto;			/* Use horizontal scroller if needed; for Firefox 2, not needed in Firefox 3 */
 	white-space: pre-wrap;		/* css-3 */
 	white-space: -moz-pre-wrap !important;	/* Mozilla, since 1999 */
 	white-space: -pre-wrap;		/* Opera 4-6 */