diff --git a/Chat.lua b/Chat.lua
index 84a85ef..7a9029c 100644
--- a/Chat.lua
+++ b/Chat.lua
@@ -26,6 +26,30 @@ SOFTWARE.
 
 local semver = LibStub:GetLibrary("SemanticVersion-1.0")
 
+-- Compatibility shim: Retail moved/removed the old ChatFrame_MessageEventHandler global.
+-- Provide gw.ChatFrame_MessageEventHandler so older code keeps working.
+gw.ChatFrame_MessageEventHandler = gw.ChatFrame_MessageEventHandler or function(frame, event, ...)
+    -- Old clients / some builds still have the global:
+    local g = _G.ChatFrame_MessageEventHandler
+    if type(g) == "function" then
+      return g(frame, event, ...)
+    end
+  
+    -- Retail: dispatch through the frame’s OnEvent handler (Blizzard chat pipeline)
+    if frame and frame.GetScript then
+      local onEvent = frame:GetScript("OnEvent")
+      if type(onEvent) == "function" then
+        return onEvent(frame, event, ...)
+      end
+    end
+  
+    -- Last ditch: don't explode. (Optional)
+    -- You can omit this if you prefer silent failure.
+    if frame and frame.AddMessage then
+      local msg = ...
+      if msg then frame:AddMessage(tostring(msg)) end
+    end
+end
 
 --- Callback handler for guild chat messages.
 -- @param type Message type received.