diff --git a/grudge/array_context.py b/grudge/array_context.py
index 7c57f644..a3c92b40 100644
--- a/grudge/array_context.py
+++ b/grudge/array_context.py
@@ -173,7 +173,7 @@ class _DistributedPartProgramID:
     part_id: Any
 
     def __str__(self):
-        name = getattr(self.f, "__name__", "<anonymous>")
+        name = getattr(self.f, "__name__", "anonymous")
         if not name.isidentifier():
             name = _to_identifier(name)