diff --git a/fe/fe-core/src/main/java/com/starrocks/privilege/ObjectType.java b/fe/fe-core/src/main/java/com/starrocks/privilege/ObjectType.java
index 359ca4a03ce62..450ae8139738c 100644
--- a/fe/fe-core/src/main/java/com/starrocks/privilege/ObjectType.java
+++ b/fe/fe-core/src/main/java/com/starrocks/privilege/ObjectType.java
@@ -119,7 +119,7 @@ public boolean equals(Object o) {
         if (this == o) {
             return true;
         }
-        if (o == null || getClass() != o.getClass()) {
+        if (!(o instanceof ObjectType)) {
             return false;
         }
         ObjectType that = (ObjectType) o;