diff --git a/gamecore/input.lua b/gamecore/input.lua
index ee76baa..21e5f70 100644
--- a/gamecore/input.lua
+++ b/gamecore/input.lua
@@ -81,7 +81,7 @@ end
 -- Manage pressed keys
 
 function InputManager:flushKeys()
-  for i,v in ipairs(self.sources) do
+  for i, source in ipairs(self.sources) do
     source:flushKeys()
   end
 end