diff --git a/src/scripts/northrend/ulduar/halls_of_stone/halls_of_stone.cpp b/src/scripts/northrend/ulduar/halls_of_stone/halls_of_stone.cpp
index 3485e81c1a..fa266db4db 100644
--- a/src/scripts/northrend/ulduar/halls_of_stone/halls_of_stone.cpp
+++ b/src/scripts/northrend/ulduar/halls_of_stone/halls_of_stone.cpp
@@ -525,6 +525,11 @@ struct npc_brann_hosAI : public npc_escortAI
                     if (pInstance)
                     {
                         pInstance->SetData(DATA_BRANN_EVENT, DONE);
+
+                        // Achievement criteria is with spell 59046 which does not exist.
+                        // There is thus no way it can be given by casting the spell on the players.
+                        pInstance->DoUpdateAchievementCriteria(ACHIEVEMENT_CRITERIA_TYPE_BE_SPELL_TARGET, 59046);
+
                         if (!bHasBeenDamaged)
                             pInstance->DoCompleteAchievement(ACHIEV_BRANN_SPANKIN_NEW);
                     }