diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/Member.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/Member.kt
index d725fb31a..9a98265d5 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/Member.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/Member.kt
@@ -70,9 +70,28 @@ enum class MemberPermission {
     /**
      * 管理员
      */
-    OPERATOR,
+    ADMINISTRATOR,
     /**
      * 一般群成员
      */
     MEMBER;
 }
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun MemberPermission.isOwner(): Boolean = this == MemberPermission.OWNER
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun MemberPermission.isAdministrator(): Boolean = this == MemberPermission.ADMINISTRATOR
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun MemberPermission.isAdministratorOrOwner(): Boolean = isAdministrator() || isOwner()
+
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun Member.isOwner(): Boolean = this.permission.isOwner()
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun Member.isAdministrator(): Boolean = this.permission.isAdministrator()
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun Member.isAdministratorOrOwner(): Boolean = this.permission.isAdministratorOrOwner()
\ No newline at end of file
diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/network/protocol/tim/packet/action/GroupPacket.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/network/protocol/tim/packet/action/GroupPacket.kt
index ca9b0f2f9..e09fc4d2f 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/network/protocol/tim/packet/action/GroupPacket.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/network/protocol/tim/packet/action/GroupPacket.kt
@@ -202,7 +202,7 @@ object GroupPacket : SessionPacketFactory<GroupPacket.GroupPacketResponse>() {
                     }
 
                     val permission = when (status.takeLowestOneBit()) {
-                        1 -> MemberPermission.OPERATOR
+                        1 -> MemberPermission.ADMINISTRATOR
                         else -> MemberPermission.MEMBER
                     }
                     members[qq] = permission