diff --git a/read.py b/read.py
index ffe1098..7ae2d39 100644
--- a/read.py
+++ b/read.py
@@ -9,7 +9,6 @@ import sys
 
 # Keys
 DEFAULT_KEY = [0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
-KEY_S0 = [0x20, 0x20, 0x20, 0x20, 0x20, 0x20]
 
 # Selecting key
 KEY = DEFAULT_KEY
diff --git a/wipe.py b/wipe.py
index 4f80d7b..3e635c4 100644
--- a/wipe.py
+++ b/wipe.py
@@ -7,7 +7,6 @@ import signal
 
 # Keys
 DEFAULT_KEY = [0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
-KEY_S0 = [0x20, 0x20, 0x20, 0x20, 0x20, 0x20]
 
 # Selecting key
 KEY = DEFAULT_KEY
diff --git a/write.py b/write.py
index 72e6a25..01ca4ec 100644
--- a/write.py
+++ b/write.py
@@ -9,7 +9,6 @@ import sys
 
 # Keys
 DEFAULT_KEY = [0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
-KEY_S0 = [0x20, 0x20, 0x20, 0x20, 0x20, 0x20]
 
 # Selecting key
 KEY = DEFAULT_KEY