diff --git a/mailpoet/assets/css/src/components-automation-editor/_errors.scss b/mailpoet/assets/css/src/components-automation-editor/_errors.scss
index cd767b18fd..0b41bfa697 100644
--- a/mailpoet/assets/css/src/components-automation-editor/_errors.scss
+++ b/mailpoet/assets/css/src/components-automation-editor/_errors.scss
@@ -30,3 +30,31 @@
     outline: none;
   }
 }
+
+.mailpoet-automation-field__error {
+  position: relative;
+
+  input,
+  select,
+  textarea {
+    background: right top/26px no-repeat url('../../img/icons/warning.svg');
+    padding-right: 26px;
+  }
+
+  select,
+  input[type=number] {
+    background-position-x: calc(100% - 26px);
+    padding-right: 8px !important;
+  }
+
+  .components-base-control__help,
+  .mailpoet-automation-field-message {
+    color: #d63638;
+  }
+
+  .components-button.mailpoet-automation-button-sidebar-primary,
+  .components-button.mailpoet-automation-button-sidebar-primary.has-text,
+  .components-button.mailpoet-automation-button-sidebar-primary.has-icon {
+    background: #d63638;
+  }
+}
diff --git a/mailpoet/assets/img/icons/warning.svg b/mailpoet/assets/img/icons/warning.svg
new file mode 100644
index 0000000000..9a516ec53b
--- /dev/null
+++ b/mailpoet/assets/img/icons/warning.svg
@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="-2 -2 24 24">
+  <!-- Source: https://github.com/WordPress/gutenberg/blob/9d02445e800fb023195072c5a755a899c1dcc210/packages/icons/src/library/warning.js -->
+  <path fill="#d63638" d="M10 2c4.42 0 8 3.58 8 8s-3.58 8-8 8-8-3.58-8-8 3.58-8 8-8zm1.13 9.38l.35-6.46H8.52l.35 6.46h2.26zm-.09 3.36c.24-.23.37-.55.37-.96 0-.42-.12-.74-.36-.97s-.59-.35-1.06-.35-.82.12-1.07.35-.37.55-.37.97c0 .41.13.73.38.96.26.23.61.34 1.06.34s.8-.11 1.05-.34z" />
+</svg>