diff --git a/src/swingmusic/__main__.py b/src/swingmusic/__main__.py
index b0bc8467..0c0a835d 100644
--- a/src/swingmusic/__main__.py
+++ b/src/swingmusic/__main__.py
@@ -84,5 +84,6 @@ def run(*args, **kwargs):
 
 
 if __name__ == "__main__":
+    multiprocessing.freeze_support()
     multiprocessing.set_start_method("spawn")
     run()