diff --git a/loopy/target/__init__.py b/loopy/target/__init__.py
index 3ec3a50b11f72a2975ac4366d495326bfcb69b37..81488d24f8aab45aaf4bd75c2e46520b3b5687ce 100644
--- a/loopy/target/__init__.py
+++ b/loopy/target/__init__.py
@@ -236,7 +236,7 @@ class DummyHostASTBuilder(ASTBuilderBase):
         return function_body
 
     def get_function_declaration(self, codegen_state, codegen_result,
-            schedule_index):
+            schedule_index, extra_args):
         return None
 
     def get_temporary_decls(self, codegen_state):