diff --git a/addons/point_of_sale/static/src/xml/pos.xml b/addons/point_of_sale/static/src/xml/pos.xml
index 67df69879ee..9794b989b65 100644
--- a/addons/point_of_sale/static/src/xml/pos.xml
+++ b/addons/point_of_sale/static/src/xml/pos.xml
@@ -94,10 +94,10 @@
             <button class="input-button number-char">9</button>
             <button class="mode-button" data-mode='price'>Price</button>
             <br />
-            <button class="input-button" id="numpad-minus" >+/-</button>
+            <button class="input-button numpad-minus" >+/-</button>
             <button class="input-button number-char">0</button>
             <button class="input-button number-char">.</button>
-            <button class="input-button" id="numpad-backspace">
+            <button class="input-button numpad-backspace">
                 <img src="/point_of_sale/static/src/img/backspace.png" width="24" height="21" />
             </button>
             <br />