diff --git a/packages/strapi-plugin-content-manager/services/ContentManager.js b/packages/strapi-plugin-content-manager/services/ContentManager.js
index 6ad20b8528..f483adac1b 100644
--- a/packages/strapi-plugin-content-manager/services/ContentManager.js
+++ b/packages/strapi-plugin-content-manager/services/ContentManager.js
@@ -185,10 +185,12 @@ module.exports = {
             case 'oneWay':
             case 'oneToOne':
             case 'manyToOne':
+            case 'oneToManyMorph':
               entry[association.alias] = null;
               break;
             case 'oneToMany':
             case 'manyToMany':
+            case 'manyToManyMorph':
               entry[association.alias] = [];
               break;
             default: