diff --git a/addons/web/static/src/xml/base.xml b/addons/web/static/src/xml/base.xml
index a0643105055..170611745ce 100644
--- a/addons/web/static/src/xml/base.xml
+++ b/addons/web/static/src/xml/base.xml
@@ -995,6 +995,7 @@
     <input t-att-type="widget.password ? 'password' : 'text'" size="1"
         t-att-name="widget.name"
         t-att-id="widget.element_id"
+        t-att-maxlength="widget.field.size"
         t-attf-class="field_#{widget.type} #{_(['integer', 'float', 'float_time']).contains(widget.type) ? 'oe-number' : ''}"
         style="width: 100%"
     /><img class="oe_field_translate oe_input_icon" t-if="widget.field.translate" t-att-src='_s + "/web/static/src/img/icons/terp-translate.png"' width="16" height="16" border="0"/>
@@ -1042,6 +1043,7 @@
     <textarea rows="6"
         t-att-name="widget.name"
         t-att-id="widget.element_id"
+        t-att-maxlength="widget.field.size"
         t-attf-class="field_#{widget.type}"
         style="width: 100%"
     ></textarea><img class="oe_field_translate oe_input_icon" t-if="widget.field.translate" t-att-src='_s + "/web/static/src/img/icons/terp-translate.png"' width="16" height="16" border="0"/>