diff --git a/doc/data/messages/u/unidiomatic-typecheck/bad.py b/doc/data/messages/u/unidiomatic-typecheck/bad.py
new file mode 100644
index 0000000000..e1e56103d1
--- /dev/null
+++ b/doc/data/messages/u/unidiomatic-typecheck/bad.py
@@ -0,0 +1,3 @@
+test_score = {"Biology": 95, "History": 80}
+if type(test_score) is dict:  # [unidiomatic-typecheck]
+    pass
diff --git a/doc/data/messages/u/unidiomatic-typecheck/good.py b/doc/data/messages/u/unidiomatic-typecheck/good.py
new file mode 100644
index 0000000000..c50c6e4ebc
--- /dev/null
+++ b/doc/data/messages/u/unidiomatic-typecheck/good.py
@@ -0,0 +1,3 @@
+test_score = {"Biology": 95, "History": 80}
+if isinstance(test_score, dict):
+    pass
diff --git a/doc/data/messages/u/unidiomatic-typecheck/related.rst b/doc/data/messages/u/unidiomatic-typecheck/related.rst
new file mode 100644
index 0000000000..25b9129a70
--- /dev/null
+++ b/doc/data/messages/u/unidiomatic-typecheck/related.rst
@@ -0,0 +1,2 @@
+* `Builtin function type() <https://docs.python.org/3/library/functions.html#type>`_
+* `Builtin function isinstance() <https://docs.python.org/3/library/functions.html#isinstance>`_