diff --git a/doc/data/messages/u/undefined-variable/bad.py b/doc/data/messages/u/undefined-variable/bad.py
new file mode 100644
index 0000000000..27664dfea0
--- /dev/null
+++ b/doc/data/messages/u/undefined-variable/bad.py
@@ -0,0 +1 @@
+print(number + 2)  # [undefined-variable]
diff --git a/doc/data/messages/u/undefined-variable/good.py b/doc/data/messages/u/undefined-variable/good.py
new file mode 100644
index 0000000000..99c9282f7d
--- /dev/null
+++ b/doc/data/messages/u/undefined-variable/good.py
@@ -0,0 +1,2 @@
+number = 3
+print(number + 2)