diff --git a/setup.cfg b/setup.cfg
index 131b3ad3..31a590a4 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -34,7 +34,7 @@ classifiers =
 [options]
 packages = find:
 package_dir = = src
-include_package_data = true
+include_package_data = True
 python_requires = >= 3.7
 # Dependencies are in setup.py for GitHub's dependency graph.
 
@@ -67,7 +67,7 @@ source =
 # F = flake8 pyflakes
 # W = pycodestyle warnings
 # B9 = bugbear opinions
-# ISC = implicit-str-concat
+# ISC = implicit str concat
 select = B, E, F, W, B9, ISC
 ignore =
     # slice notation whitespace, invalid
@@ -83,12 +83,13 @@ ignore =
 # up to 88 allowed by bugbear B950
 max-line-length = 80
 per-file-ignores =
-    # __init__ module exports names
+    # __init__ exports names
     src/flask/__init__.py: F401
 
 [mypy]
 files = src/flask
 python_version = 3.7
+show_error_codes = True
 allow_redefinition = True
 disallow_subclassing_any = True
 # disallow_untyped_calls = True