diff --git a/lldb/test/lang/c/anonymous/TestAnonymous.py b/lldb/test/lang/c/anonymous/TestAnonymous.py
index 1a2ce2923022..4194c441563a 100644
--- a/lldb/test/lang/c/anonymous/TestAnonymous.py
+++ b/lldb/test/lang/c/anonymous/TestAnonymous.py
@@ -63,6 +63,7 @@ class AnonymousTestCase(TestBase):
         self.expr_parent()
 
     @expectedFailureFreeBSD('llvm.org/pr21550')
+    @expectedFailureWindows('llvm.org/pr21550')
     @dwarf_test
     def test_expr_null_with_dwarf(self):
         self.buildDwarf()