diff --git a/TPerl/TPerl.lua b/TPerl/TPerl.lua
index b988381..ba5529c 100644
--- a/TPerl/TPerl.lua
+++ b/TPerl/TPerl.lua
@@ -4106,13 +4106,14 @@ local function AuraButtonOnShow(self)
 		cd.countdown:SetTextColor(1, 1, 0)
 	end
 
-	local duration, expirationTime, sourceUnit
+	local duration, expirationTime, sourceUnit, isFromPlayerOrPlayerPet
 	if not IsVanillaClassic and C_UnitAuras then
 		local auraData = TPerl_SafeGetAuraDataByIndex("player", self.xindex, self.xfilter)
 		if auraData then
 			duration = TPerl_SafeTableGet(auraData, "duration")
 			expirationTime = TPerl_SafeTableGet(auraData, "expirationTime")
 			sourceUnit = TPerl_SafeTableGet(auraData, "sourceUnit")
+			isFromPlayerOrPlayerPet = TPerl_SafeTableGet(auraData, "isFromPlayerOrPlayerPet")
 		end
 	else
 		local _
@@ -4121,7 +4122,16 @@ local function AuraButtonOnShow(self)
 
 	if duration and expirationTime then
 		local start = expirationTime - duration
-		TPerl_CooldownFrame_SetTimer(self.cooldown, start, duration, 1, sourceUnit == "player")
+		-- sourceUnit may be a secret (tainted) value in Midnight/Retail; compare safely.
+		local isPlayerSource
+		if isFromPlayerOrPlayerPet ~= nil and TPerl_CanAccess(isFromPlayerOrPlayerPet) then
+			isPlayerSource = isFromPlayerOrPlayerPet and true or false
+		elseif TPerl_CanAccess(sourceUnit) then
+			isPlayerSource = (sourceUnit == "player")
+		else
+			isPlayerSource = false
+		end
+		TPerl_CooldownFrame_SetTimer(self.cooldown, start, duration, 1, isPlayerSource)
 	end
 end