diff --git a/htdocs/includes/boxes/modules_boxes.php b/htdocs/includes/boxes/modules_boxes.php
index 608467251d2..e9db489cd91 100644
--- a/htdocs/includes/boxes/modules_boxes.php
+++ b/htdocs/includes/boxes/modules_boxes.php
@@ -122,7 +122,7 @@ class ModeleBoxes
         if ($nbcol > 0) { print ' colspan="'.$nbcol.'"'; }
         print '>';
 
-        if ($conf->use_ajax)
+		if ($conf->use_ajax && $conf->browser->firefox)
 		{
 			print '<table class="nobordernopadding" width="100%"><tr><td align="left">';
 		}
@@ -131,7 +131,7 @@ class ModeleBoxes
         {
             print ' <a href="'.$head['sublink'].'" target="_new">'.img_picto($head['subtext'],$head['subpicto']).'</a>';
         }
-        if ($conf->use_ajax)
+		if ($conf->use_ajax && $conf->browser->firefox)
         {
       		print '</td><td class="nocellnopadd" width="14">';
       		print img_picto($langs->trans("Move"),'uparrow','style="cursor:move;"');
diff --git a/htdocs/index.php b/htdocs/index.php
index 7fe0a6a48c5..309fcb3a7fb 100644
--- a/htdocs/index.php
+++ b/htdocs/index.php
@@ -570,7 +570,7 @@ if (sizeof($boxarray))
     print "</table>";
 }
 
-if ($conf->use_ajax && $conf->browser->firefox && $conf->global->MAIN_SHOW_DEVELOPMENT_MODULES)
+if ($conf->use_ajax && $conf->browser->firefox)
 {
 	print '<script type="text/javascript" language="javascript">'."\n";
 	for ($ii=0, $ni=sizeof($boxarray); $ii < $ni; $ii++)