diff --git a/src/renaissance/integrations/python/ast/rst_node.py b/src/renaissance/integrations/python/ast/rst_node.py
index bdee5159..543b02a2 100644
--- a/src/renaissance/integrations/python/ast/rst_node.py
+++ b/src/renaissance/integrations/python/ast/rst_node.py
@@ -289,7 +289,7 @@ def __contains__(self, item) -> bool:
         """AI: Return whether item(s) are found among this node's children."""
         if not isinstance(item, list):
             item = [item]
-        return bool(find_in_list(self.children, item))
+        return find_in_list(self.children, item) >= 0
 
     def __getitem__(self, key):
         """Allow indexing/slicing into node to access children.
diff --git a/src/renaissance/syntax_tree/match_finder.py b/src/renaissance/syntax_tree/match_finder.py
index 38c447d1..027e66b3 100644
--- a/src/renaissance/syntax_tree/match_finder.py
+++ b/src/renaissance/syntax_tree/match_finder.py
@@ -271,12 +271,12 @@ def find_variants(src: Sequence, cmp: Sequence, expansion=None, start: int = 0,
 
 
 def find_in_list(src: Sequence, cmp: Sequence, exp=None, start: int = 0) -> int:
-    """AI: Return the end index of the first full match of cmp within src starting at start, or -2 if none."""
+    """AI: Return the end index of the first full match of cmp within src starting at start, or MIS_MATCH if none."""
     if exp is None:
         exp = {}
     variants = find_variants(src, cmp, exp, start)
     if not variants:
-        return -2
+        return MIS_MATCH
     exp.update(variants[0].exp)
     # [0] most greedy
     # [-1] least greedy
diff --git a/test/python/ast/test_patternic_style.py b/test/python/ast/test_patternic_style.py
index a18f880f..5595b11e 100644
--- a/test/python/ast/test_patternic_style.py
+++ b/test/python/ast/test_patternic_style.py
@@ -137,8 +137,8 @@ def test_match_one_is_not_equal(self) -> None:
     def test_is_match_all_stmt(self) -> None:
         """AI: Verify a MATCH_ALL placeholder pattern's node is contained within the parsed module."""
         atu = self.factory.create_from_text("ba(55)\nca(555)\nlo(4444)\nna=55", "test.py")
-        match_all = self.pattern_factory.create("$$pa")
-        assert_that(match_all.node, is_in(atu))
+        match_all = self.pattern_factory.create_statement("$$pa")
+        assert_that(match_all, is_in(atu))
 
     def test_is_exact_match(self) -> None:
         """AI: Verify the first statement in the module equals an independently parsed identical statement."""