diff --git a/src/server/scripts/EasternKingdoms/Karazhan/instance_karazhan.cpp b/src/server/scripts/EasternKingdoms/Karazhan/instance_karazhan.cpp
index 0fe84199b..a6dfff1c6 100644
--- a/src/server/scripts/EasternKingdoms/Karazhan/instance_karazhan.cpp
+++ b/src/server/scripts/EasternKingdoms/Karazhan/instance_karazhan.cpp
@@ -374,9 +374,9 @@ public:
                 case GO_SIDE_ENTRANCE_DOOR:
                     m_uiSideEntranceDoor = go->GetGUID();
                     if (GetBossState(DATA_OPERA_PERFORMANCE) == DONE)
-                        go->SetGameObjectFlag(GO_FLAG_LOCKED);
-                    else
                         go->RemoveGameObjectFlag(GO_FLAG_LOCKED);
+                    else
+                        go->SetGameObjectFlag(GO_FLAG_LOCKED);
                     break;
                 case GO_DUST_COVERED_CHEST:
                     DustCoveredChest = go->GetGUID();