diff --git a/Hardware_Proteus_Wiring_v03.md b/Hardware_Proteus_Wiring_v03.md
index eba1a850..59d18f9d 100644
--- a/Hardware_Proteus_Wiring_v03.md
+++ b/Hardware_Proteus_Wiring_v03.md
@@ -105,8 +105,8 @@
 | 31  | AT4        | at    | Analog Thermistor Input #4           |
 | 32  | 5V SENS 1  | 5v    | Analog Voltage +5 supply #1          |
 | 33  | 5V SENS 2  | 5v    | Analog Voltage +5 supply #2          |
-| 34  | KNOCK 1    |       | Knock input 1 - software not yet implemented |
-| 35  | KNOCK 2    |       | Knock input 1 - software not yet implemented |
+| 34  | ~KNOCK 1~  |       | ~Knock input 1~ - Due to a hardware defect, knock hardware can't work on v0.3 :( |
+| 35  | ~KNOCK 2~  |       | ~Knock input 2~ |
 
 ## Misc notes
 - UB-20PMFP-LC7002 waterproof USB connector