diff --git a/doc/data/messages/b/bad-builtin/bad.py b/doc/data/messages/b/bad-builtin/bad.py
new file mode 100644
index 0000000000..1c60815e59
--- /dev/null
+++ b/doc/data/messages/b/bad-builtin/bad.py
@@ -0,0 +1,2 @@
+numbers = list(map(lambda x: 2 * x, [1, 2, 3]))  # [bad-builtin]
+print(numbers)
diff --git a/doc/data/messages/b/bad-builtin/good.py b/doc/data/messages/b/bad-builtin/good.py
new file mode 100644
index 0000000000..c56dbfbe3c
--- /dev/null
+++ b/doc/data/messages/b/bad-builtin/good.py
@@ -0,0 +1,2 @@
+numbers = [2 * x for x in [1, 2, 3]]
+print(numbers)