diff --git a/build.py b/build.py
index 4e9dbc2..76e51f0 100644
--- a/build.py
+++ b/build.py
@@ -86,7 +86,8 @@ def build():
             
         # ZIP-Archiv für das Release erstellen
         import tempfile
-        zip_name = f"fcco-Converter-{system.lower()}"
+        sys_name = "macos" if system == "Darwin" else system.lower()
+        zip_name = f"fcco-Converter-{sys_name}"
         zip_path = dist_dir / zip_name
         
         with tempfile.TemporaryDirectory() as tmpdir: