diff --git a/platformio.ini b/platformio.ini
index 635406a..7aff0e0 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -18,6 +18,7 @@ platform = espressif32@>=5.2.0
 build_flags =
     -D=${PIOENV}
     -DCOMPONENT_EMBED_FILES=webapp_dist/index.html.gz:webapp_dist/zones.json.gz:webapp_dist/favicon.ico:webapp_dist/js/app.js.gz
+    -Wall
 
 lib_deps =
     https://github.com/yubox-node-org/ESPAsyncWebServer