Fixed event registration to message registration

diff --git a/PerfectRaid_Buffs.lua b/PerfectRaid_Buffs.lua
index 20a67c4..8546e96 100644
--- a/PerfectRaid_Buffs.lua
+++ b/PerfectRaid_Buffs.lua
@@ -39,7 +39,7 @@ function Buffs:Initialize()

 	frames = PerfectRaid.frames
 	self:RegisterMessage("DONGLE_PROFILE_CREATED")
-	self:RegisterEvent("PERFECTRAID_TAB_CHANGED")
+	self:RegisterMessage("PERFECTRAID_TAB_CHANGED")
 end

 function Buffs:Enable()