diff --git a/packages/strapi-plugin-content-type-builder/services/schema-builder/content-type-builder.js b/packages/strapi-plugin-content-type-builder/services/schema-builder/content-type-builder.js
index e80e1864a8..aa8efe08a8 100644
--- a/packages/strapi-plugin-content-type-builder/services/schema-builder/content-type-builder.js
+++ b/packages/strapi-plugin-content-type-builder/services/schema-builder/content-type-builder.js
@@ -31,6 +31,8 @@ module.exports = function createComponentBuilder() {
       const targetCT = this.contentTypes.get(uid);
       const targetAttribute = targetCT.getAttribute(attribute.via);
 
+      if (!targetAttribute) return;
+
       // do not delete polymorphic relations
       if (targetAttribute.collection === '*' || targetAttribute.model === '*') {
         return;