diff --git a/odoo/addons/base/views/ir_module_views.xml b/odoo/addons/base/views/ir_module_views.xml
index 249917e3701..af667742571 100644
--- a/odoo/addons/base/views/ir_module_views.xml
+++ b/odoo/addons/base/views/ir_module_views.xml
@@ -67,13 +67,13 @@
                             By <field name="author" class="oe_inline" placeholder="Author Name"/>
                         </h3>
                         <div>
-                            <button name="button_immediate_install" string="Install" attrs="{'invisible': ['|', ('to_buy','=',True), ('state','!=', 'uninstalled')]}" type="object" class="btn btn-primary"/>
-                            <a href="https://odoo.com/pricing?utm_source=db&amp;utm_medium=module#hosting=on_premise" class="btn btn-primary" states="uninstalled,uninstallable" attrs="{'invisible': [('to_buy','=',False)]}" role="button">Upgrade</a>
-                            <button name="button_immediate_upgrade" states="installed" string="Upgrade" type="object" class="btn btn-primary"/>
-                            <button name="button_uninstall_wizard" states="installed" string="Uninstall" type="object"  class="btn btn-secondary"/>
-                            <button name="button_uninstall_cancel" states="to remove" string="Cancel Uninstall" type="object" class="btn btn-secondary"/>
-                            <button name="button_upgrade_cancel" states="to upgrade" string="Cancel Upgrade" type="object" class="btn btn-secondary"/>
-                            <button name="button_install_cancel" states="to install" string="Cancel Install" type="object" class="btn btn-secondary"/>
+                            <button name="button_immediate_install" string="Install" attrs="{'invisible': ['|', ('to_buy','=',True), ('state','!=', 'uninstalled')]}" type="object" class="btn btn-primary mr-1"/>
+                            <a href="https://odoo.com/pricing?utm_source=db&amp;utm_medium=module#hosting=on_premise" class="btn btn-primary mr-1" states="uninstalled,uninstallable" attrs="{'invisible': [('to_buy','=',False)]}" role="button">Upgrade</a>
+                            <button name="button_immediate_upgrade" states="installed" string="Upgrade" type="object" class="btn btn-primary mr-1"/>
+                            <button name="button_uninstall_wizard" states="installed" string="Uninstall" type="object"  class="btn btn-secondary mr-1"/>
+                            <button name="button_uninstall_cancel" states="to remove" string="Cancel Uninstall" type="object" class="btn btn-secondary mr-1"/>
+                            <button name="button_upgrade_cancel" states="to upgrade" string="Cancel Upgrade" type="object" class="btn btn-secondary mr-1"/>
+                            <button name="button_install_cancel" states="to install" string="Cancel Install" type="object" class="btn btn-secondary mr-1"/>
                         </div>
                     </div>
                     <div class="oe_clear"/>