diff --git a/.vscode/extensions.json b/.vscode/extensions.json
index 272828b5..e80666bf 100644
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@@ -1,7 +1,7 @@
 {
-	// See http://go.microsoft.com/fwlink/?LinkId=827846
-	// for the documentation about the extensions.json format
-	"recommendations": [
-		"platformio.platformio-ide"
-	]
-}
\ No newline at end of file
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ]
+}
diff --git a/platformio.ini b/platformio.ini
index ef81d469..f90bd88a 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -14,6 +14,7 @@ build_dir   = .pioenvs
 lib_dir     = libraries
 libdeps_dir = .piolibdeps
 data_dir = esp3d/data
+default_envs = esp8266
 
 [env:esp32dev]
 platform = https://github.com/platformio/platform-espressif32.git
@@ -36,6 +37,7 @@ lib_ignore =
 [env:esp8266]
 ;esp8266 core 2.5.2
 platform = espressif8266@2.2.0
+platform_packages      = toolchain-xtensa@2.40802.200502
 board = esp12e
 framework = arduino
 monitor_speed = 115200