diff --git a/Calibration.md b/Calibration.md
index e2d3e87..dac2eb9 100644
--- a/Calibration.md
+++ b/Calibration.md
@@ -27,4 +27,4 @@ If min and mid values are close, the inputs will be identified as normal potis.
 Otherwise the inputs will be identified as middle resting potis.
 
 ⚠The limits will be stored in flash memory and will be erased only if you fully delete memory before flashing.<br />
-An alternative to bypass those limits is to change **FLASH_WRITE_KEY** in config.h to a value different than 0x1234.
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+An alternative to bypass those limits is to change **FLASH_WRITE_KEY** in config.h to a value different than 0x1233.
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