diff --git a/app/conference_centers/conference_sessions.php b/app/conference_centers/conference_sessions.php
index e50e58e6ae..8b7b54aaad 100644
--- a/app/conference_centers/conference_sessions.php
+++ b/app/conference_centers/conference_sessions.php
@@ -172,7 +172,7 @@
 						echo "		<audio controls=\"controls\">\n";
   						echo "			<source src=\"download.php?id=".escape($row['conference_session_uuid'])."\" type=\"audio/x-wav\">\n";
 						echo "		</audio>\n";
-						//echo "		<a href=\"javascript:void(0);\" onclick=\"window.open('".PROJECT_PATH."/app/recordings/recording_play.php?a=download&type=moh&filename=".base64_encode('archive/'.$tmp_year.'/'.$tmp_month.'/'.$tmp_day.'/'.$tmp_name)."', 'play',' width=420,height=150,menubar=no,status=no,toolbar=no')\">\n";
+						//echo "		<a href=\"javascript:void(0);\" onclick=\"window.open('".PROJECT_PATH."/app/recordings/recording_play.php?a=download&type=moh&filename=".urlencode('archive/'.$tmp_year.'/'.$tmp_month.'/'.$tmp_day.'/'.$tmp_name)."', 'play',' width=420,height=150,menubar=no,status=no,toolbar=no')\">\n";
 						//echo "			".$text['label-play']."\n";
 						//echo "		</a>\n";
 						//echo "		&nbsp;\n";