diff --git a/system/ps2_keyboard.h65 b/system/ps2_keyboard.h65
index 5885c17..045a637 100644
--- a/system/ps2_keyboard.h65
+++ b/system/ps2_keyboard.h65
@@ -35,12 +35,14 @@ Import ps2kb, send_command, send_cmd, send_data, cmd_response, response_length,
 
 VIA = IO1
 ; Enough time must pass for 3 bits to be shifted in.
-TIMER_RECV = 230  ; 230 ms (@1MHz)
+; TIMER_RECV = 230  ; 230 ms (@1MHz)
+TIMER_RECV = 400  ; 230 ms (@1MHz)
 ; Enough time must pass for one bit must be shifted out (parity),
 ; but at most two (parity+stop).
 ; After that, the interrupt must have happened because the keyboard will pull data low.
 ; At that point, the SR needs to be set to input again
-TIMER_SEND = 230  ; 180 ms (@1MHz)
+; TIMER_SEND = 230  ; 180 ms (@1MHz)
+TIMER_SEND = 400  ; 180 ms (@1MHz)
 
 PULL_REG = IO::RANH
 PULL_DDR = IO::DDRA