diff --git a/src/index.js b/src/index.js
index 264bc77..165ca94 100644
--- a/src/index.js
+++ b/src/index.js
@@ -650,7 +650,7 @@ class Service extends AdapterService {
         const findParams = Object.assign({}, params, { query: Object.assign({}, params.query, this.getIdsQuery(id, idList), selectParam) });
 
         for (const key of Object.keys(dataCopy)) {
-          if (findParams.query[key]) {
+          if (key in findParams.query) {
             findParams.query[key] = dataCopy[key];
           }
         }