diff --git a/src/main/webapp/resources/js/base/dataset.js b/src/main/webapp/resources/js/base/dataset.js
index 4fce267..64172f7 100644
--- a/src/main/webapp/resources/js/base/dataset.js
+++ b/src/main/webapp/resources/js/base/dataset.js
@@ -1326,7 +1326,7 @@ class DatasetControl {
 		if (!all) {
 			this._load(state, prev);
 		} else {
-			let query = Object.assign(this.query, {}),
+			let query = Object.assign({}, this.query),
 				state = this.dataset.state;
 			this.query.fetchSize = this.dataset.length;
 			this.query.pageNum = 1;