diff --git a/platformio.ini b/platformio.ini
index bf462bd08..cf220247d 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -98,7 +98,8 @@ build_flags =
 build_unflags = 
   ${common.unbuild_flags}
 extra_scripts =
-  scripts/rename_fw.py ; renames the firmware .bin file
+  pre:scripts/build_interface.py ; builds the WebUI
+  post:scripts/rename_fw.py ; renames the firmware .bin file
 monitor_speed = 115200
 monitor_filters = direct
 build_type = release