diff --git a/pio-scripts/create_factory_bin.py b/pio-scripts/create_factory_bin.py
index c0ef4a8c..ec8274e2 100644
--- a/pio-scripts/create_factory_bin.py
+++ b/pio-scripts/create_factory_bin.py
@@ -130,4 +130,4 @@ def esp32_create_combined_bin(source, target, env):
     esptool.main(cmd)
 
 
-env.AddPostAction("$BUILD_DIR/${PROGNAME}.bin", esp32_create_combined_bin)
+env.AddPostAction("buildprog", esp32_create_combined_bin)