diff --git a/src/flake8/main/application.py b/src/flake8/main/application.py
index 86be4bd..202a269 100644
--- a/src/flake8/main/application.py
+++ b/src/flake8/main/application.py
@@ -5,7 +5,6 @@ import logging
 import sys
 import time
 from typing import List, Optional, Sequence  # noqa: F401 (until flake8 3.7)
-from typing import Type, TYPE_CHECKING  # noqa: F401 (until flake8 3.7)
 
 import flake8
 from flake8 import checker
@@ -18,8 +17,10 @@ from flake8.options import aggregator, config
 from flake8.options import manager
 from flake8.plugins import manager as plugin_manager
 
-if TYPE_CHECKING:
+if False:  # `typing.TYPE_CHECKING` was introduced in 3.5.2
     # fmt: off
+    # `typing.Type` as introduced in 3.5.2
+    from typing import Type  # noqa: F401 (until flake8 3.7)
     from flake8.formatting.base import BaseFormatter  # noqa: F401, E501 (until flake8 3.7)
     # fmt: on
 
diff --git a/src/flake8/utils.py b/src/flake8/utils.py
index bdd7a0d..ae0d060 100644
--- a/src/flake8/utils.py
+++ b/src/flake8/utils.py
@@ -10,10 +10,9 @@ import sys
 import tokenize
 from typing import Callable, Dict, Generator  # noqa: F401 (until flake8 3.7)
 from typing import List, Pattern, Sequence  # noqa: F401 (until flake8 3,7)
-from typing import Tuple, TYPE_CHECKING  # noqa: F401 (until flake8 3.7)
-from typing import Union  # noqa: F401 (until flake8 3.7)
+from typing import Tuple, Union  # noqa: F401 (until flake8 3.7)
 
-if TYPE_CHECKING:
+if False:  # `typing.TYPE_CHECKING` was introduced in 3.5.2
     from flake8.plugins.manager import Plugin  # noqa: F401 (until flake8 3.7)
 
 DIFF_HUNK_REGEXP = re.compile(r"^@@ -\d+(?:,\d+)? \+(\d+)(?:,(\d+))? @@.*$")