diff --git a/plugins/dbgate-plugin-mongo/src/backend/driver.js b/plugins/dbgate-plugin-mongo/src/backend/driver.js
index b2e76ccac..b0d857792 100644
--- a/plugins/dbgate-plugin-mongo/src/backend/driver.js
+++ b/plugins/dbgate-plugin-mongo/src/backend/driver.js
@@ -361,16 +361,17 @@ const driver = {
             res.replaced.push(resdoc._id);
           }
         } else {
-          const resdoc = await collection.updateOne(convertObjectId(update.condition), {
-            $set: convertObjectId(_.pickBy(update.fields, (v, k) => !v?.$$undefined$$)),
-            $unset: _.fromPairs(
-              Object.keys(update.fields)
-                .filter((k) => update.fields[k]?.$$undefined$$)
-                .map((k) => [k, ''])
-            ),
+          const set = convertObjectId(_.pickBy(update.fields, (v, k) => !v?.$$undefined$$));
+          const unset = _.fromPairs(
+            Object.keys(update.fields)
+              .filter((k) => update.fields[k]?.$$undefined$$)
+              .map((k) => [k, ''])
+          );
+          const updates = {};
+          if (!_.isEmpty(set)) updates.$set = set;
+          if (!_.isEmpty(unset)) updates.$unset = unset;
 
-            // $set: convertObjectId(update.fields),
-          });
+          const resdoc = await collection.updateOne(convertObjectId(update.condition), updates);
           res.updated.push(resdoc._id);
         }
       }
diff --git a/plugins/dbgate-plugin-mongo/src/frontend/driver.js b/plugins/dbgate-plugin-mongo/src/frontend/driver.js
index 58e34cc22..45d3f66b3 100644
--- a/plugins/dbgate-plugin-mongo/src/frontend/driver.js
+++ b/plugins/dbgate-plugin-mongo/src/frontend/driver.js
@@ -95,16 +95,19 @@ const driver = {
           ...update.fields,
         })});\n`;
       } else {
+        const set = _pickBy(update.fields, (v, k) => v !== undefined);
+        const unset = _fromPairs(
+          Object.keys(update.fields)
+            .filter((k) => update.fields[k] === undefined)
+            .map((k) => [k, ''])
+        );
+        const updates = {};
+        if (!_.isEmpty(set)) updates.$set = set;
+        if (!_.isEmpty(unset)) updates.$unset = unset;
+
         res += `db.${update.pureName}.updateOne(${jsonStringifyWithObjectId(
           update.condition
-        )}, ${jsonStringifyWithObjectId({
-          $set: _pickBy(update.fields, (v, k) => v !== undefined),
-          $unset: _fromPairs(
-            Object.keys(update.fields)
-              .filter((k) => update.fields[k] === undefined)
-              .map((k) => [k, ''])
-          ),
-        })});\n`;
+        )}, ${jsonStringifyWithObjectId(updates)});\n`;
       }
     }
     for (const del of changeSet.deletes) {