diff --git a/BigDebuffs_Mainline.lua b/BigDebuffs_Mainline.lua
index 9820f2c..24c5afe 100644
--- a/BigDebuffs_Mainline.lua
+++ b/BigDebuffs_Mainline.lua
@@ -380,7 +380,7 @@ addon.Spells = {
     [20066] = { type = CROWD_CONTROL }, -- Repentance
     [10326] = { type = CROWD_CONTROL }, -- Turn Evil
     [25771] = { type = BUFF_OTHER }, -- Forbearance
-    [31821] = { type = BUFF_DEFENSIVE }, -- Aura Mastery
+    [317929] = { type = BUFF_DEFENSIVE }, -- Aura Mastery (Concentration Aura)
     [31850] = { type = BUFF_DEFENSIVE }, -- Ardent Defender
     [31884] = { type = BUFF_OFFENSIVE }, -- Avenging Wrath
         [216331] = { type = BUFF_OFFENSIVE, parent = 31884 }, -- Avenging Crusader (Holy Talent)