diff --git a/platformio.ini b/platformio.ini
index 392148e..6c0c678 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -32,7 +32,7 @@ lib_deps = https://github.com/awawa-dev/NeoPixelBus.git#HyperSerialESP32, hideak
 test_ignore =
 
 [env:SK6812_RGBW_COLD]
-build_flags = -DNEOPIXEL_RGBW -DCOLD_WHITE -DDATA_PIN=2 ${env.build_flags}
+build_flags = -DNEOPIXEL_RGBW -DCOLD_WHITE -DDATA_PIN=2 ${env.build_flags} -DSECOND_SEGMENT_START_INDEX=135 -DSECOND_SEGMENT_DATA_PIN=4 -DSECOND_SEGMENT_REVERSED=true
 custom_prog_version = esp32_SK6812_RGBW_COLD
 
 board = esp32dev