diff --git a/addons/web/static/src/css/base.css b/addons/web/static/src/css/base.css
index 59407fd40ee..abe91bedef4 100644
--- a/addons/web/static/src/css/base.css
+++ b/addons/web/static/src/css/base.css
@@ -1884,45 +1884,45 @@ ul.oe-arrow-list li.oe-arrow-list-selected .oe-arrow-list-after {
 }
 
 /* Dialog traceback cases */
-.openerp .expandcase {
+.openerp .oe_expandcase {
     background: transparent url(/web/static/src/img/expand.gif) 0 50% no-repeat;
     margin-top:10px;
 }
-.openerp .collapsecase {
+.openerp .oe_collapsecase {
     background: transparent url(/web/static/src/img/collapse.gif) 0 50% no-repeat;
     margin-top:10px;
 }
-.openerp .case-head{
+.openerp .oe_case_head{
     padding-left:18px;
     margin-top:5px;
 }
-.openerp .error-detail{
+.openerp .oe_error_detail{
     display:none;
 }
-.openerp .error-send{
+.openerp .oe_error_send{
     display:block;
 }
-.openerp .error-fix{
+.openerp .oe_error_fix{
     border:1px solid #999999;
     overflow:auto;
 }
-.openerp .fielddiv{
+.openerp .oe_fielddiv{
     display:inline-block;
 }
-.openerp .fielddiv label{
+.openerp .oe_fielddiv label{
     /*  width:20%; */
     float:left;
     text-align:right;
 }
-.openerp .fielddiv div{
+.openerp .oe_fielddiv div{
     width:79%;
-	float:right;
+    float:right;
 }
-.openerp .fielddiv input[type=text],textarea{
+.openerp .oe_fielddiv input[type=text],textarea{
     width:200px;
 }
 /* for Alignment center */
-.openerp .centeralign{
+.openerp .oe_centeralign{
     text-align:center;
 }
 
diff --git a/addons/web/static/src/js/chrome.js b/addons/web/static/src/js/chrome.js
index b898472a6b2..df56bff9a7b 100644
--- a/addons/web/static/src/js/chrome.js
+++ b/addons/web/static/src/js/chrome.js
@@ -214,14 +214,14 @@ openerp.web.ServerError = openerp.web.Dialog.extend({
         });
 
         if (!self.session.has_pwc) {
-            $('.error-send').html('<span><a href="http://www.openerp.com/support-or-publisher-warranty-contract" target="_blank">Unsupported/Community Version</a></span>');
+            $('.oe_error_send').html('<span><a href="http://www.openerp.com/support-or-publisher-warranty-contract" target="_blank">Unsupported/Community Version</a></span>');
         }
 
-        dialog.$element.find('.expandcase').each(function() {
+        dialog.$element.find('.oe_expandcase').each(function() {
             var $this = $(this);
 
             $this.click( function() {
-                $this.next().toggle().prev().toggleClass("expandcase collapsecase");
+                $this.next().toggle().prev().toggleClass("oe_expandcase oe_collapsecase");
             });
         });
     }
diff --git a/addons/web/static/src/xml/base.xml b/addons/web/static/src/xml/base.xml
index 5b471d9eb76..c5ffedd157b 100644
--- a/addons/web/static/src/xml/base.xml
+++ b/addons/web/static/src/xml/base.xml
@@ -1347,30 +1347,27 @@
 </t>
 <t t-name="DialogTraceback">
     <form>
-        <div class="expandcase">
-            <span class="case-head"><t t-esc="'Let me fix it'" /></span>
+        <div class="oe_expandcase">
+            <span class="oe_case_head"><t t-esc="'Let me fix it'" /></span>
         </div>
-        <div class="error-detail error-fix">
+        <div class="oe_error_detail oe_error_fix">
             <pre><t t-esc="error.message"/></pre>
             <hr/>
             <pre><t t-esc="error.data.debug"/></pre>
         </div>
-        <!--div id="case2" class="expandcase">
-            <span class="case-head"><a><t t-esc="'Fix it for me'" /></a></span>
-        </div-->
-        <div class="error-send">
+        <div class="oe_error_send">
             <div>
-                <div class="centeralign"><b>OpenERP Enterprise Contract.</b></div>
+                <div class="oe_centeralign"><b>OpenERP Enterprise Contract.</b></div>
                 <div><br/>Your request will be sent to OpenERP and OpenERP Enterprise team will reply you shortly.<br/></div>
-                <span class="fielddiv">
+                <span class="oe_fielddiv">
                     <label>Summary:</label><br/>
                     <input id="issuename" type="text"/>
                 </span><br/><br/>
-                <div class="fielddiv">
+                <div class="oe_fielddiv">
                     <label>Description:</label><br/>
                     <textarea id="explanation" rows="6"></textarea>
                 </div><br/><br/>
-                <div class="fielddiv">
+                <div class="oe_fielddiv">
                     <label>What you did:</label><br/>
                     <textarea id="remark" rows="6" ></textarea>
                 </div>