diff --git a/Libraries/Compat/libraries/LibGroupTalents-1.0/LibGroupTalents-1.0.lua b/Libraries/Compat/libraries/LibGroupTalents-1.0/LibGroupTalents-1.0.lua
index 0df77d203..4124d9f8e 100644
--- a/Libraries/Compat/libraries/LibGroupTalents-1.0/LibGroupTalents-1.0.lua
+++ b/Libraries/Compat/libraries/LibGroupTalents-1.0/LibGroupTalents-1.0.lua
@@ -313,8 +313,11 @@ end
 
 -- UNIT_AURA
 function lib:UNIT_AURA(unit)
+	if not unit then
+		return
+	end
 	local guid = UnitGUID(unit)
-	if (not UnitIsVisible(unit) or (self.wasOffline and self.wasOffline[guid])) then
+	if (not UnitIsVisible(unit) or (self.wasOffline and self.wasOffline[guid or ""])) then
 		if (not self.outOfSight) then
 			self.outOfSight = {}
 		end
diff --git a/Libraries/Compat/libraries/LibGroupTalents-1.0/lib.xml b/Libraries/Compat/libraries/LibGroupTalents-1.0/lib.xml
index b1925e1ae..f7343e254 100644
--- a/Libraries/Compat/libraries/LibGroupTalents-1.0/lib.xml
+++ b/Libraries/Compat/libraries/LibGroupTalents-1.0/lib.xml
@@ -1,5 +1,5 @@
 <Ui xmlns="http://www.blizzard.com/wow/ui/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.blizzard.com/wow/ui/
 ..\FrameXML\UI.xsd">
-<Script file="LibTalentQuery-1.0.lua"/>
-<Script file="LibGroupTalents-1.0.lua"/>
-</Ui>
\ No newline at end of file
+    <Script file="LibTalentQuery-1.0.lua"/>
+    <Script file="LibGroupTalents-1.0.lua"/>
+</Ui>