diff --git a/src/bundle/Resources/public/js/scripts/admin.contenttype.edit.js b/src/bundle/Resources/public/js/scripts/admin.contenttype.edit.js
index 00c37e1de7..740d04b383 100644
--- a/src/bundle/Resources/public/js/scripts/admin.contenttype.edit.js
+++ b/src/bundle/Resources/public/js/scripts/admin.contenttype.edit.js
@@ -1,4 +1,4 @@
-(function (global, doc, eZ, Routing, Translator) {
+(function(global, doc, eZ, Routing, Translator) {
     const TIMEOUT_REMOVE_PLACEHOLDERS = 1500;
     let targetContainer = null;
     let sourceContainer = null;
@@ -78,7 +78,7 @@
             targetPlace = [...items].find((item, index) => index === draggedItemPosition);
         }
 
-        const fieldGroupInput =  fieldNode.querySelector('.ibexa-input--field-group');
+        const fieldGroupInput = fieldNode.querySelector('.ibexa-input--field-group');
         const removeFieldsBtn = fieldNode.querySelectorAll('.ibexa-collapse__extra-action-button--remove-field-definitions');
 
         removeDragPlaceholders();
@@ -140,9 +140,11 @@
             const groupFieldsDefinitionCount = group.querySelectorAll('.ibexa-collapse--field-definition').length;
             const emptyGroupPlaceholder = group.querySelector('.ibexa-field-definitions-empty-group');
             const anchoredPlaceholder = group.querySelector('.ibexa-field-definitions-placeholder--anchored');
+            const removeBtn = group.querySelector('.ibexa-collapse__extra-action-button--remove-field-definitions-group');
 
             emptyGroupPlaceholder.classList.toggle('ibexa-field-definitions-empty-group--hidden', groupFieldsDefinitionCount !== 0);
             anchoredPlaceholder.classList.toggle('ibexa-field-definitions-placeholder--hidden', groupFieldsDefinitionCount === 0);
+            removeBtn.disabled = groupFieldsDefinitionCount > 0;
         });
 
         itemsAction.forEach((itemAction) => {
@@ -208,6 +210,10 @@
             .catch(eZ.helpers.notification.showErrorNotification);
     };
     const removeFieldsGroup = (event) => {
+        if (event.currentTarget.hasAttribute('disabled')) {
+            return;
+        }
+
         const collapseNode = event.currentTarget.closest('.ibexa-collapse');
         const fieldsToDelete = [...collapseNode.querySelectorAll('.ibexa-collapse--field-definition')].map(
             (fieldDefinition) => fieldDefinition.dataset.fieldDefinitionIdentifier
@@ -287,6 +293,11 @@
     });
     doc.querySelectorAll('.ibexa-collapse__extra-action-button--remove-field-definitions-group').forEach(
         (removeFieldDefinitionsGroupButton) => {
+            const groupFieldsDefinitionCount = removeFieldDefinitionsGroupButton
+                .closest('.ibexa-collapse--field-definitions-group')
+                .querySelectorAll('.ibexa-collapse--field-definition').length;
+
+            removeFieldDefinitionsGroupButton.toggleAttribute('disabled', groupFieldsDefinitionCount > 0);
             removeFieldDefinitionsGroupButton.addEventListener('click', removeFieldsGroup, false);
         }
     );
diff --git a/src/bundle/Resources/views/themes/admin/content_type/field_definitions.html.twig b/src/bundle/Resources/views/themes/admin/content_type/field_definitions.html.twig
index 981261ccfc..e8178119f1 100644
--- a/src/bundle/Resources/views/themes/admin/content_type/field_definitions.html.twig
+++ b/src/bundle/Resources/views/themes/admin/content_type/field_definitions.html.twig
@@ -20,7 +20,7 @@
                 'header_label': id | ibexa_field_group_name,
                 'is_expanded': true,
                 'extra_actions': [
-                    { 'icon_name': 'trash', 'button_class':  'ibexa-collapse__extra-action-button--remove-field-definitions-group'}
+                    { 'icon_name': 'trash', 'button_class':  'ibexa-btn--ghost ibexa-collapse__extra-action-button--remove-field-definitions-group'}
                 ],
                 'data_attr': {
                     'data-fields-group-id':  id