diff --git a/base_partner_merge/views/base_partner_merge.xml b/base_partner_merge/views/base_partner_merge.xml
index 6900ccfc2..b821fd335 100644
--- a/base_partner_merge/views/base_partner_merge.xml
+++ b/base_partner_merge/views/base_partner_merge.xml
@@ -81,7 +81,7 @@
                         attrs="{'invisible': [('state', '!=', 'selection')]}" />
                     <button name="action_start_manual_process"
                         string="Merge with Manual Check"
-                        type="object"  class='oe_highlight"
+                        type="object"  class="oe_highlight"
                         attrs="{'invisible': [('state', '!=', 'option')]}" />
                     <button name="action_start_automatic_process"
                         string="Merge Automatically"