diff --git a/tools/platformio-build.py b/tools/platformio-build.py
index b500b4e0..6f8ea515 100644
--- a/tools/platformio-build.py
+++ b/tools/platformio-build.py
@@ -97,7 +97,7 @@ env.Append(
     ],
 
     CPPPATH=[
-       join(FRAMEWORK_DIR, "tools", "sdk", "include", "config"),
+        join(FRAMEWORK_DIR, "tools", "sdk", "include", "config"),
         join(FRAMEWORK_DIR, "tools", "sdk", "include", "app_trace"),
         join(FRAMEWORK_DIR, "tools", "sdk", "include", "app_update"),
         join(FRAMEWORK_DIR, "tools", "sdk", "include", "asio"),