diff --git a/mock-api/README.md b/mock-api/README.md
index be13e7afd..ba8dfbd10 100644
--- a/mock-api/README.md
+++ b/mock-api/README.md
@@ -2,4 +2,4 @@
 
 When developing and testing the web interface, it's handy not to bother with re-flashing an ESP32 each time. The idea is to mimic the ESP using a mock/stub server that responds to the REST (HTTP POST & GET) and WebSocket calls.
 
-To set it up it do run `yarn install` in the `mock-api` folder, then from the `interface` folder run `yarn run standalone`. This will start the mock API server on port 3080 using data from `mock-api/server.js` and the web server runs on port 3000.
+To use first make sure you have nodejs installed (>v18) then install yarn (`npm install -g yarn`). Now type `yarn` from this `mock-api` folder. To run EMS-ESP's WebUI navigate up to the `interface` folder and type `yarn run standalone`. This will start the mock API server on port 3080 using static dummy data from `mock-api/server.js` and also the web server which is at <http://localhost:3000>.
diff --git a/scripts/build_interface.py b/scripts/build_interface.py
index ff1d2ec8e..6fd6e215b 100644
--- a/scripts/build_interface.py
+++ b/scripts/build_interface.py
@@ -3,11 +3,12 @@ from shutil import copytree, rmtree, copyfileobj
 import os
 import gzip
 
-# brotli has better compression than gzip but requires https so leaving here for future 
+# brotli has better compression than gzip but requires https so leaving here for future
 # import brotli
 
 Import("env")
 
+
 def gzipFile(file):
     with open(file, 'rb') as f_in:
         with gzip.open(file + '.gz', 'wb') as f_out:
@@ -20,27 +21,29 @@ def gzipFile(file):
     #         f_out.write(brotli.compress(f_in.read(), quality=11))
     #     os.remove(file)
 
+
 def flagExists(flag):
     buildFlags = env.ParseFlags(env["BUILD_FLAGS"])
     for define in buildFlags.get("CPPDEFINES"):
         if (define == flag or (isinstance(define, list) and define[0] == flag)):
             return True
 
+
 def buildWeb():
     os.chdir("interface")
     print("Building web interface...")
     try:
-        env.Execute("yarn install")
+        env.Execute("yarn")
         env.Execute("yarn run typesafe-i18n --no-watch")
         with open("./src/i18n/i18n-util.ts") as r:
             text = r.read().replace("Locales = 'pl'", "Locales = 'en'")
         with open("./src/i18n/i18n-util.ts", "w") as w:
             w.write(text)
         env.Execute("yarn run build")
-        
+
         buildPath = Path("build")
         wwwPath = Path("../data/www")
-        
+
         if wwwPath.exists() and wwwPath.is_dir():
             rmtree(wwwPath)
 
@@ -53,7 +56,8 @@ def buildWeb():
     finally:
         os.chdir("..")
 
+
 if (len(BUILD_TARGETS) == 0 or "upload" in BUILD_TARGETS):
     buildWeb()
 else:
-    print("Skipping build web interface for target(s): " + ", ".join(BUILD_TARGETS))
\ No newline at end of file
+    print("Skipping build web interface for target(s): " + ", ".join(BUILD_TARGETS))