diff --git a/addons/mrp/wizard/mrp_workcenter_block_view.xml b/addons/mrp/wizard/mrp_workcenter_block_view.xml
index 8f872ecae6b..01bc051de3a 100644
--- a/addons/mrp/wizard/mrp_workcenter_block_view.xml
+++ b/addons/mrp/wizard/mrp_workcenter_block_view.xml
@@ -12,7 +12,7 @@
                     <field name="workcenter_id" invisible="1"/>
                 </group>
                 <footer>
-                    <button name="button_block" string="Block" type="object" class="btn-danger"/>
+                    <button name="button_block" string="Block" type="object" class="btn-danger text-uppercase"/>
                     <button string="Cancel" class="btn-default" special="cancel" />
                 </footer>
             </form>