diff --git a/modal/functions.py b/modal/functions.py
index 0b58ae865..a3a7e52ca 100644
--- a/modal/functions.py
+++ b/modal/functions.py
@@ -1277,7 +1277,7 @@ async def _call_generator(self, args, kwargs):
     async def _call_generator_nowait(self, args, kwargs):
         deprecation_warning(
             (2024, 12, 11),
-            "Calling spawn on a generator function is deprecated and will soon be removed.",
+            "Calling spawn on a generator function is deprecated and will soon raise an exception.",
         )
         return await _Invocation.create(
             self,