diff --git a/addons/website_slides/static/src/xml/website_slides_upload.xml b/addons/website_slides/static/src/xml/website_slides_upload.xml
index fdf962af6cd..8de364a611b 100644
--- a/addons/website_slides/static/src/xml/website_slides_upload.xml
+++ b/addons/website_slides/static/src/xml/website_slides_upload.xml
@@ -73,7 +73,7 @@
         <div class="form-group">
             <label for="duration" class="col-form-label">Duration</label>
             <div class="input-group">
-                <input type="number" id="duration" name="duration" placeholder="Estimated slide completion time" class="form-control"/>
+                <input type="number" id="duration" min="0" name="duration" placeholder="Estimated slide completion time" class="form-control"/>
                     <div class="input-group-prepend">
                     <span class="input-group-text">Minutes</span>
                 </div>