diff --git a/addons/web/static/src/css/base.css b/addons/web/static/src/css/base.css
index fbab33722c0..2ba5b9967aa 100644
--- a/addons/web/static/src/css/base.css
+++ b/addons/web/static/src/css/base.css
@@ -1299,6 +1299,10 @@
 .openerp2 .oe_form_header .oe-sidebar-attachments {
   display: none;
 }
+.openerp2 .oe_form_invalid input, .openerp2 .oe_form_invalid select, .openerp2 .oe_form_invalid textarea {
+  background-color: #ff6666 !important;
+  border: 1px solid #dd0000 !important;
+}
 .openerp2 .oe_form_group_cell {
   line-height: 18px;
 }
diff --git a/addons/web/static/src/css/base.sass b/addons/web/static/src/css/base.sass
index 417014aee78..d7356660cd1 100644
--- a/addons/web/static/src/css/base.sass
+++ b/addons/web/static/src/css/base.sass
@@ -1054,6 +1054,10 @@ $colour4: #8a89ba
 
     // }}}
     // FormView.body {{{
+    .oe_form_invalid
+        input, select, textarea
+            background-color: #F66 !important
+            border: 1px solid #D00 !important
     .oe_form_group_cell
         line-height: 18px
         .oe_form_button