diff --git a/src/frontend/components/button/lib/submit-field-button.ts b/src/frontend/components/button/lib/submit-field-button.ts
index a511f272d..644ea20b1 100644
--- a/src/frontend/components/button/lib/submit-field-button.ts
+++ b/src/frontend/components/button/lib/submit-field-button.ts
@@ -1,6 +1,8 @@
+/* eslint-disable */
 import "jstree";
 import "datatables.net";
 import "@lol768/jquery-querybuilder-no-eval"
+import { validateQueryBuilder } from "validation";
 
 declare global {
     interface Window {
@@ -27,6 +29,7 @@ export default class SubmitFieldButton {
      */
     constructor(element:JQuery<HTMLElement>) {
         element.on('click', (ev) => {
+            const $form = $(ev.currentTarget).closest('form') as JQuery<HTMLFormElement>;
 
             const $jstreeContainer = $('#field_type_tree');
             const $jstreeEl = $('#tree-config .tree-widget-container');
@@ -70,7 +73,9 @@ export default class SubmitFieldButton {
                 bUpdateFilter = true;
             }
 
-            if (res && $displayConditionsField.length) {
+            if(!validateQueryBuilder($displayConditionsBuilderEl)) {
+                ev.preventDefault();
+            } else if (res && $displayConditionsField.length) {
                 bUpdateDisplayConditions = true;
             }
 
@@ -105,7 +110,7 @@ export default class SubmitFieldButton {
                 window.UpdatePeopleFilter(peopleConditionsFieldEl, ev);
             }
 
-            if (bUpdateDisplayConditions) {
+            if (bUpdateDisplayConditions && res) {
                 $displayConditionsField.val(JSON.stringify(res, null, 2));
             }
 
@@ -115,7 +120,6 @@ export default class SubmitFieldButton {
              * and appends them to the form manually */
             const $inputs = $permissionTable.DataTable().$('input,select,textarea');
             $inputs.hide(); // Stop them appearing to the user in a strange format
-            const $form = $(ev.currentTarget).closest('form');
             $permissionTable.remove();
             $form.append($inputs);
         });
diff --git a/src/frontend/components/form-group/display-conditions/lib/component.js b/src/frontend/components/form-group/display-conditions/lib/component.js
index 8decad367..188c2b999 100644
--- a/src/frontend/components/form-group/display-conditions/lib/component.js
+++ b/src/frontend/components/form-group/display-conditions/lib/component.js
@@ -25,13 +25,11 @@ class DisplayConditionsComponent extends Component {
         { type: 'contains', accept_values: true, apply_to: ['string'] },
         { type: 'not_equal', accept_values: true, apply_to: ['string'] },
         { type: 'not_contains', accept_values: true, apply_to: ['string'] }
-      ]
-    })
-
-    if (builderData.filterBase) {
-      const data = JSON.parse(atob(builderData.filterBase))
-      this.el.queryBuilder('setRules', data)
-    }
+      ],
+      allow_empty: true
+    }).queryBuilder('setRules', builderData.filterBase 
+      ? JSON.parse(atob(builderData.filterBase)) 
+      : {rules:[]});
   }
 }
 
diff --git a/src/frontend/js/lib/validation.js b/src/frontend/js/lib/validation.js
index 0c23eb84b..18b111391 100644
--- a/src/frontend/js/lib/validation.js
+++ b/src/frontend/js/lib/validation.js
@@ -1,3 +1,5 @@
+import { DangerAlert } from "components/alert/lib/dangerAlert";
+
 // Bind events to a field to trigger validation
 const initValidationOnField = (field) => {
   // Input
@@ -299,6 +301,20 @@ const validateTree = (field) => {
   }
 }
 
+const validateQueryBuilder = (field) => {
+  if(!(field && field.length)) return;
+  const result = field.queryBuilder('validate');
+  if(!result) {
+    if($('.display-conditions-error').length) return false;
+    const danger = new DangerAlert('There are errors in the conditions you have set, please fix these before submitting the form');
+    const banner = danger.render();
+    banner.classList.add('mb-3', 'mt-0', 'display-conditions-error');
+    field.closest('.card__content').prepend(banner);
+    return false;
+  }
+  return true;
+}
+
 // Expand the card with a certain field and scroll it into view
 const expandCardValidate = (field) => {
   const $collapse = $(field).closest('.card--expandable').find('.collapse')
@@ -321,4 +337,4 @@ const expandCardValidate = (field) => {
   }
 }
 
-export { initValidationOnField, validateTree, validateRadioGroup, validateCheckboxGroup, validateRequiredFields };
+export { initValidationOnField, validateTree, validateRadioGroup, validateCheckboxGroup, validateRequiredFields, validateQueryBuilder };