diff --git a/variants/esp32s3/picomputer-s3/platformio.ini b/variants/esp32s3/picomputer-s3/platformio.ini
index b5a4ff178..11bae2e7c 100644
--- a/variants/esp32s3/picomputer-s3/platformio.ini
+++ b/variants/esp32s3/picomputer-s3/platformio.ini
@@ -37,6 +37,9 @@ extends = env:picomputer-s3
 build_flags =
   ${env:picomputer-s3.build_flags}
   -D MESHTASTIC_EXCLUDE_WEBSERVER=1
+  ; device-ui's I2CKeyboardScanner unconditionally calls Wire.begin(I2C_SDA, I2C_SCL);
+  -D I2C_SDA=8
+  -D I2C_SCL=9
   -D INPUTDRIVER_MATRIX_TYPE=1
   -D USE_PIN_BUZZER=PIN_BUZZER
   -D USE_SX127x