diff --git a/addons/project/static/src/project_sharing/components/chatter/chatter_container.xml b/addons/project/static/src/project_sharing/components/chatter/chatter_container.xml
index 35337763f90..70f0bed62d0 100644
--- a/addons/project/static/src/project_sharing/components/chatter/chatter_container.xml
+++ b/addons/project/static/src/project_sharing/components/chatter/chatter_container.xml
@@ -1,7 +1,7 @@
 <templates id="template" xml:space="preserve">
 
     <t t-name="project.ChatterContainer" owl="1">
-        <div t-attf-class="o_portal_chatter p-0 {{props.twoColumns ? 'row' : ''}}">
+        <div t-attf-class="o_portal_chatter p-0 container {{props.twoColumns ? 'row' : ''}}">
             <div t-attf-class="{{props.twoColumns ? 'col-lg-5' : props.resId ? 'border-bottom' : ''}}">
                 <div class="o_portal_chatter_header">
                     <ChatterMessageCounter count="state.options.message_count"/>