diff --git a/LedControl.py b/LedControl.py
index 378cfc8..c2485bd 100644
--- a/LedControl.py
+++ b/LedControl.py
@@ -93,7 +93,7 @@ def setRow(self, addr, row, value):
     def setColumn(self, addr, col, value):
         if addr<0 or addr >= self.maxDevices or col < 0 or col>7 or value < 0 or value > 255:
             return
-        for i in range(8):
+        for row in range(8):
             val = value >> (7-row)
             val = val & 1
             self.setLed(addr, row, col, val)