diff --git a/tests/test_parser.py b/tests/test_parser.py
index ebc6152..dab69f7 100644
--- a/tests/test_parser.py
+++ b/tests/test_parser.py
@@ -208,11 +208,11 @@ class TestParsers(unittest.TestCase):
 
         @v_args(meta=True)
         class T1(Transformer):
-            def a(self, children, meta):
+            def a(self, meta, children):
                 assert not children
                 return meta.line
 
-            def start(self, children, meta):
+            def start(self, meta, children):
                 return children
 
         @v_args(meta=True, inline=True)
diff --git a/tests/test_reconstructor.py b/tests/test_reconstructor.py
index e2f2dbe..4df1cb9 100644
--- a/tests/test_reconstructor.py
+++ b/tests/test_reconstructor.py
@@ -183,8 +183,8 @@ class TestReconstructor(TestCase):
         keyword x += y
         """
 
-        l1 = Lark(g1, parser='lalr')
-        l2 = Lark(g2, parser='lalr')
+        l1 = Lark(g1, parser='lalr', maybe_placeholders=False)
+        l2 = Lark(g2, parser='lalr', maybe_placeholders=False)
         r = Reconstructor(l2)
 
         tree = l1.parse(code)