diff --git a/static/themes/default/css/main.css b/static/themes/default/css/main.css
index e49fedcf3..5b22d5b56 100644
--- a/static/themes/default/css/main.css
+++ b/static/themes/default/css/main.css
@@ -147,6 +147,25 @@ h1, h2, h3, h4, h5, h6 {
     padding-left: 1.4rem;
 }
 
+/* Form error display was changed in bootstrap 4, provide compatibility */
+.has-error .help-block,
+.has-error .control-label,
+.has-error .radio,
+.has-error .checkbox,
+.has-error .radio-inline,
+.has-error .checkbox-inline,
+.has-error.radio label,
+.has-error.checkbox label,
+.has-error.radio-inline label,
+.has-error.checkbox-inline label {
+    color: #a94442;
+}
+
+.has-error .form-control {
+    border-color: #a94442;
+    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+}
+
 /*
  * Basic styling
  */