diff --git a/gfx/event.lua b/gfx/event.lua
index fc1816d..d7c248a 100644
--- a/gfx/event.lua
+++ b/gfx/event.lua
@@ -9,7 +9,7 @@ function Event.getKeyParams(evt)
 end
 
 function Event.isCharEvent(evt, char)
-  return evt[1] == "char" and (key == nil or evt[2] == key) 
+  return evt[1] == "char" and (char == nil or evt[2] == char)
 end
 
 function Event.getCharValue(evt)