diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/circ/circulation.tmpl b/koha-tmpl/intranet-tmpl/prog/en/modules/circ/circulation.tmpl
index fe0fa082ec..ac6fec7d02 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/circ/circulation.tmpl
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/circ/circulation.tmpl
@@ -283,7 +283,7 @@ function refocus(calendar) {
         <!-- TMPL_IF NAME="IMPOSSIBLE" -->
 
 <!-- TMPL_IF NAME="soundon" -->
-<audio src="/intranet-tmpl/prog/sound/critical.ogg" autoplay autobuffer></audio>
+<audio src="/intranet-tmpl/prog/sound/critical.ogg" autoplay="autoplay" autobuffer="autobuffer"></audio>
 <!-- /TMPL_IF -->        
 
 <div class="yui-g">
@@ -346,7 +346,7 @@ function refocus(calendar) {
 </div></div>
 <!-- TMPL_ELSE -->
 <!-- TMPL_IF NAME="soundon" -->
-<audio src="/intranet-tmpl/prog/sound/beep.ogg" autoplay autobuffer></audio>
+<audio src="/intranet-tmpl/prog/sound/beep.ogg" autoplay="autoplay" autobuffer="autobuffer"></audio>
 <!-- /TMPL_IF -->
     <!--/TMPL_IF --> <!-- /impossible -->
 
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/circ/returns.tmpl b/koha-tmpl/intranet-tmpl/prog/en/modules/circ/returns.tmpl
index 1fe161c905..644f4af23e 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/circ/returns.tmpl
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/circ/returns.tmpl
@@ -94,7 +94,7 @@ function Dopop(link) {
 	<!-- waiting -->
 
 <!-- TMPL_IF NAME="soundon" -->
-<audio src="/intranet-tmpl/prog/sound/ending.ogg" autoplay autobuffer></audio>
+<audio src="/intranet-tmpl/prog/sound/ending.ogg" autoplay="autoplay" autobuffer="autobuffer"></audio>
 <!-- /TMPL_IF -->	
 	
 <div class="dialog message">
@@ -224,7 +224,7 @@ function Dopop(link) {
 	<!--  reserved  -->
 	
 <!-- TMPL_IF NAME="soundon" -->
-<audio src="/intranet-tmpl/prog/sound/opening.ogg" autoplay autobuffer></audio>
+<audio src="/intranet-tmpl/prog/sound/opening.ogg" autoplay="autoplay" autobuffer="autobuffer"></audio>
 <!-- /TMPL_IF -->
 	
 	<div class="dialog message">
@@ -292,11 +292,11 @@ function Dopop(link) {
                     <!-- /TMPL_IF -->
             <!-- /TMPL_LOOP -->
 <!-- TMPL_IF NAME="soundon" -->
-<audio src="/intranet-tmpl/prog/sound/critical.ogg" autoplay autobuffer></audio>
+<audio src="/intranet-tmpl/prog/sound/critical.ogg" autoplay="autoplay" autobuffer="autobuffer"></audio>
 <!-- /TMPL_IF -->
         <!-- TMPL_ELSE -->
 <!-- TMPL_IF NAME="soundon" -->
-<audio src="/intranet-tmpl/prog/sound/beep.ogg" autoplay autobuffer></audio>
+<audio src="/intranet-tmpl/prog/sound/beep.ogg" autoplay="autoplay" autobuffer="autobuffer"></audio>
 <!-- /TMPL_IF -->
         <!-- /TMPL_IF -->
     </div>