diff --git a/addons/website_rating/static/src/js/website_mail.js b/addons/website_rating/static/src/js/website_mail.js
index 8f21f740c98..6fd9a305e95 100644
--- a/addons/website_rating/static/src/js/website_mail.js
+++ b/addons/website_rating/static/src/js/website_mail.js
@@ -33,6 +33,11 @@ odoo.define('website_rating.thread', function(require) {
         init: function(parent, options){
             this._super.apply(this, arguments);
 
+            // apply ratio to default rating value
+            if (options.default_rating_value) {
+                options.default_rating_value = parseFloat(options.default_rating_value) / STAR_RATING_RATIO;
+            }
+
             // default options
             this.options = _.defaults(this.options, {
                 'default_message': false,
@@ -50,7 +55,7 @@ odoo.define('website_rating.thread', function(require) {
                 '5': _t("I love it"),
             };
             this.user_click = false; // user has click or not
-            this.set("star_value", this.options.rating_default_value);
+            this.set("star_value", this.options.default_rating_value);
             this.on("change:star_value", this, this._onChangeStarValue);
         },
         start: function(){
@@ -59,7 +64,7 @@ odoo.define('website_rating.thread', function(require) {
                 // rating stars
                 self.$input = self.$('input[name="rating_value"]');
                 self.$star_list = self.$('.stars').find('i');
-                self.set("star_value", self.options.rating_default_value); // set the default value to trigger the display of star widget
+                self.set("star_value", self.options.default_rating_value); // set the default value to trigger the display of star widget
             });
         },
 
@@ -265,7 +270,7 @@ odoo.define('website_rating.thread', function(require) {
         _onChangeRatingDomain: function(){
             var domain = [];
             if(this.get('rating_value')){
-                domain = [['rating_value', '=', this.get('rating_value')]];
+                domain = [['rating_value', '=', this.get('rating_value') * STAR_RATING_RATIO]];
             }
             this._changeCurrentPage(1, domain);
         },
diff --git a/addons/website_rating/static/src/xml/website_mail.xml b/addons/website_rating/static/src/xml/website_mail.xml
index 11534a768c2..d4e8dd83218 100644
--- a/addons/website_rating/static/src/xml/website_mail.xml
+++ b/addons/website_rating/static/src/xml/website_mail.xml
@@ -79,7 +79,7 @@
             <div class="rate_text">
                 <span class="badge badge-info"></span>
             </div>
-            <input type="hidden" readonly="readonly" name="rating_value" t-att-value="default_rating"/>
+            <input type="hidden" readonly="readonly" name="rating_value" t-att-value="default_rating || ''"/>
         </div>
     </t>
 
diff --git a/addons/website_rating/views/website_rating_templates.xml b/addons/website_rating/views/website_rating_templates.xml
index 32dc3d3c573..8ce20495b32 100644
--- a/addons/website_rating/views/website_rating_templates.xml
+++ b/addons/website_rating/views/website_rating_templates.xml
@@ -18,7 +18,7 @@
         Rating widget static: show 5 stars (full or empty) regarding the given rating_avg and rating_count
     -->
     <template id="rating_widget_stars_static" name="Rating: static star widget">
-        <t t-set="rating_avg" t-value="round(rating_avg * 100) / 100"/>
+        <t t-set="rating_avg" t-value="round(rating_avg * 100) / 100 / 2"/>
         <t t-set="val_decimal" t-value="round(rating_avg % 1, 1)"/>
         <t t-set="val_integer" t-value="int(rating_avg)"/>
         <t t-set="empty_star" t-value="5 - (val_integer+1) if val_decimal else 5 - val_integer"/>
diff --git a/addons/website_slides/controllers/mail.py b/addons/website_slides/controllers/mail.py
index 1273ebe1119..5ec41d9de88 100644
--- a/addons/website_slides/controllers/mail.py
+++ b/addons/website_slides/controllers/mail.py
@@ -33,6 +33,7 @@ class SlidesMail(http.Controller):
             ('res_id', '=', res_id),
             ('website_published', '=', True),
             ('author_id', '=', request.env.user.partner_id.id),
+            ('message_type', '=', 'comment'),
             ('id', '=', message_id)
         ]  # restrict to the given message_id
         message = request.env['mail.message'].search(domain, limit=1)
diff --git a/addons/website_slides/controllers/main.py b/addons/website_slides/controllers/main.py
index 73f7de00384..9b9eda1442e 100644
--- a/addons/website_slides/controllers/main.py
+++ b/addons/website_slides/controllers/main.py
@@ -300,6 +300,7 @@ class WebsiteSlides(WebsiteProfile):
                 ('model', '=', channel._name),
                 ('res_id', '=', channel.id),
                 ('author_id', '=', request.env.user.partner_id.id),
+                ('message_type', '=', 'comment'),
                 ('website_published', '=', True)
             ], order='write_date DESC', limit=1).read(['body', 'rating_value'])
             last_message_data = last_message_values[0] if last_message_values else {}