diff --git a/spinetoolbox/main.py b/spinetoolbox/main.py
index c946b7297..4b27fb187 100644
--- a/spinetoolbox/main.py
+++ b/spinetoolbox/main.py
@@ -39,8 +39,9 @@
 
 def main():
     """Creates main window GUI and starts main event loop."""
-    asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
     multiprocessing.freeze_support()
+    if sys.platform == "win32":
+        asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
     logging.basicConfig(
         stream=sys.stderr,
         level=logging.DEBUG,