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-rw-r--r--esp8266/README.md3
1 files changed, 2 insertions, 1 deletions
diff --git a/esp8266/README.md b/esp8266/README.md
index 17002eefe4..679461755d 100644
--- a/esp8266/README.md
+++ b/esp8266/README.md
@@ -29,7 +29,8 @@ Build instructions
The tool chain required for the build is the OpenSource ESP SDK, which can be
found at <https://github.com/pfalcon/esp-open-sdk>. Clone this repository and
-run `make` in its directory to build and install the SDK locally.
+run `make` in its directory to build and install the SDK locally. Make sure
+to add toolchain bin directory to your PATH.
Then, to build MicroPython for the ESP8266, just run:
```bash