diff --git a/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/Framework.java b/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/Framework.java
index b3dee4c..7f01d08 100644
--- a/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/Framework.java
+++ b/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/Framework.java
@@ -40,6 +40,9 @@ public abstract class Framework extends Plugin {
      */
     public Framework(PluginWrapper wrapper, File dataFolder) {
         super(wrapper);
+        if (!(wrapper.getDescriptor() instanceof FrameworkDescriptor)) {
+            throw new IllegalStateException("Invalid description object");
+        }
         this.dataFolder = dataFolder;
         try {
             initial();