diff --git a/package.json b/package.json
index 808f62c..1da5352 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "nagu-owl",
-  "version": "1.11.6",
+  "version": "1.11.7",
   "description": "[![Node.js CI](https://github.com/nagucc/owl/actions/workflows/node.js.yml/badge.svg)](https://github.com/nagucc/owl/actions/workflows/node.js.yml)",
   "type": "module",
   "main": "dist/index.js",
diff --git a/src/index.ts b/src/index.ts
index d09d29a..9c3cac8 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -144,12 +144,13 @@ export class RdfsResource extends Notion<string> implements IRdfsResource {
     await Promise.all(operations);
 
     // 设置新值
-    const ts = await Promise.all([
-      this.setPropertyValue(rdfs.label, label),
-      this.setPropertyValue(rdfs.comment, comment),
-      this.setPropertyValue(rdfs.isDefinedBy, isDefinedBy as INotion<string>),
-      this.setPropertyValue(rdfs.seeAlso, seeAlso),
-    ]);
+    const setOperations = [];
+    if (label) setOperations.push(this.setPropertyValue(rdfs.label, label));
+    if (comment) setOperations.push(this.setPropertyValue(rdfs.comment, comment));
+    if (isDefinedBy) setOperations.push(this.setPropertyValue(rdfs.isDefinedBy, isDefinedBy.toString()));
+    if (seeAlso) setOperations.push(this.setPropertyValue(rdfs.seeAlso, seeAlso));
+    
+    const ts = await Promise.all(setOperations);
 
     // 修改自身变量
     this.label = ts[0]?.object;