diff --git a/src/main/js/bundles/dn_querybuilder/manifest.json b/src/main/js/bundles/dn_querybuilder/manifest.json
index e3b2c69b..78517722 100644
--- a/src/main/js/bundles/dn_querybuilder/manifest.json
+++ b/src/main/js/bundles/dn_querybuilder/manifest.json
@@ -252,7 +252,8 @@
                 },
                 {
                     "name": "_resultApiConfig",
-                    "providing": "result-api.Config"
+                    "providing": "result-api.Config",
+                    "cardinality": "0..1"
                 },
                 {
                     "name": "_tool",