diff --git a/code/platformio.ini b/code/platformio.ini
index cca411ec..3a7c1aad 100644
--- a/code/platformio.ini
+++ b/code/platformio.ini
@@ -7,19 +7,19 @@ data_dir = espurna/data
 # ------------------------------------------------------------------------------
 # PLATFORM:
 #   !! DO NOT confuse platformio's ESP8266 development platform with Arduino core for ESP8266
-#   We use platformIO 1.5.0 as default
+#   We use Arduino Core 2.3.0 (platformIO 1.5.0) as default
 #
-#   platformIO 1.5.0 = arduino core 2.3.0
-#   platformIO 1.6.0 = arduino core 2.4.0
-#   platformIO 1.7.3 = arduino core 2.4.1
-#   platformIO 1.8.0 = arduino core 2.4.2
+#   arduino core 2.3.0 = platformIO 1.5.0
+#   arduino core 2.4.0 = platformIO 1.6.0
+#   arduino core 2.4.1 = platformIO 1.7.3
+#   arduino core 2.4.2 = platformIO 1.8.0
 # ------------------------------------------------------------------------------
-platform_150 = espressif8266@1.5.0
-platform_160 = espressif8266@1.6.0
-platform_173 = espressif8266@1.7.3
-platform_180 = espressif8266@1.8.0
-platform_latest = ${common.platform_180}
-platform = ${common.platform_150}
+arduino_core_2_3_0 = espressif8266@1.5.0
+arduino_core_2_4_0 = espressif8266@1.6.0
+arduino_core_2_4_1 = espressif8266@1.7.3
+arduino_core_2_4_2 = espressif8266@1.8.0
+
+platform = ${common.arduino_core_2_3_0}
 
 # ------------------------------------------------------------------------------
 # FLAGS: DEBUG
@@ -33,6 +33,7 @@ debug_flags = -DDEBUG_ESP_CORE -DDEBUG_ESP_SSL -DDEBUG_ESP_WIFI -DDEBUG_ESP_HTTP
 #   build flags for 512k/1m ESP's are different because we use Linker Scripts to adjust flash split
 #    build_flags_512k ( 512 KB) =  487 KB sketch,  4 KB eeprom, 16 KB reserved
 #    build_flags_1m0m (1024 KB) =  999 KB sketch,  4 KB eeprom, 16 KB reserved
+#    build_flags_2m1m (2048 KB) = 1019 KB sketch, 16 KB eeprom,  992 KB spiffs, 16 KB reserved
 #    build_flags_4m1m (4096 KB) = 1019 KB sketch, 16 KB eeprom,  992 KB spiffs, 16 KB reserved, 2048 KB empty/ota?
 #    build_flags_4m3m (4096 KB) = 1019 KB sketch, 16 KB eeprom, 3040 KB spiffs, 16 KB reserved
 #