diff --git a/pio-tools/gen-berry-structures.py b/pio-tools/gen-berry-structures.py
index 6fd1611e8..49bb8e3d0 100644
--- a/pio-tools/gen-berry-structures.py
+++ b/pio-tools/gen-berry-structures.py
@@ -5,7 +5,7 @@ from os.path import join
 
 # generate all precompiled Berry structures from multiple modules
 CURRENT_DIR = os.getcwd()
-BERRY_GEN_DIR = join(CURRENT_DIR, "lib", "libesp32","berry")
+BERRY_GEN_DIR = join(env.subst("$PROJECT_DIR"), "lib", "libesp32","berry")
 os.chdir(BERRY_GEN_DIR)
 cmd = ("python3",join("tools","coc","coc"),"-o","generate","src","default",join("..","berry_tasmota","src"),join("..","berry_mapping","src"),join("..","berry_int64","src"),join("..","..","libesp32_lvgl","lv_binding_berry","src"),join("..","..","libesp32_lvgl","lv_binding_berry","generate"),"-c",join("default","berry_conf.h"))
 returncode = subprocess.call(cmd, shell=False)