diff --git a/matrix_keypad/BBb_GPIO.py b/matrix_keypad/BBb_GPIO.py
index 3d251e6..86d52e6 100644
--- a/matrix_keypad/BBb_GPIO.py
+++ b/matrix_keypad/BBb_GPIO.py
@@ -30,7 +30,7 @@ def __init__(self, columnCount = 3):
         pin5 = "P9_12"
         pin6 = "P9_26"
         pin7 = "P9_11"
-        pin8 = "p9_24"
+        pin8 = "P9_24"
 
         # CONSTANTS 
         if columnCount is 3: