diff --git a/artiq/py2llvm/ast_body.py b/artiq/py2llvm/ast_body.py
index 5a44b1f6e..60981098a 100644
--- a/artiq/py2llvm/ast_body.py
+++ b/artiq/py2llvm/ast_body.py
@@ -271,3 +271,6 @@ class Visitor:
             self.builder.ret_void()
         else:
             self.builder.ret(val.auto_load(self.builder))
+
+    def _visit_stmt_Pass(self, node):
+        pass