diff --git a/platformio.ini b/platformio.ini
index c04f7e125681..7a5f457de179 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -13,10 +13,13 @@ src_dir = sonoff
 [env:sonoff]
 platform = espressif8266
 framework = arduino
-; ESP8266 - Sonoff Basic et al.
 board = esp01_1m
-; ESP8285 - Sonoff Touch and Sonoff 4CH
-; board = esp8285
-build_flags = -Wl,-Tesp8266.flash.1m64.ld -DMQTT_MAX_PACKET_SIZE=512
 
-lib_deps = PubSubClient, NeoPixelBus, IRremoteESP8266, ArduinoJSON
+; Select one of two board_flash_mode options below
+; Sonoff Basic et al. (ESP8266 uses dio or qio)
+board_flash_mode = qio
+; Sonoff Touch and Sonoff 4CH (ESP8285 uses dout)
+; board_flash_mode = dout
+
+build_flags = -Wl,-Tesp8266.flash.1m64.ld -DMQTT_MAX_PACKET_SIZE=512
+lib_deps = PubSubClient, NeoPixelBus, IRremoteESP8266, ArduinoJSON
\ No newline at end of file