diff --git a/retrace/retrace.py b/retrace/retrace.py
index 408c027c7..4b9ccf0a2 100644
--- a/retrace/retrace.py
+++ b/retrace/retrace.py
@@ -275,7 +275,7 @@ def visitPolymorphic(self, polymorphic, lvalue, rvalue):
                 print(r'        break;')
             if polymorphic.defaultType is None:
                 print(r'    default:')
-                print(r'        retrace::warning(call) << "unexpected polymorphic case" << %s << "\n";' % (switchExpr,))
+                #print(r'        retrace::warning(call) << "unexpected polymorphic case" << %s << "\n";' % (switchExpr,))
                 print(r'        break;')
             print(r'    }')
             if polymorphic.stream: