--- a/doc.php3
+++ b/doc.php3
@@ -62,7 +62,7 @@
 <p>
 Quick reference for the available event types for the performance counters. The same
 info can be retrieved by running <tt>op_help</tt>.
-<br/>
+<br />
 <a href="intel-events.php3">Intel</a> | <a href="amd-events.php3">AMD</a>
 </p>