diff --git a/src/packaged/cli.py b/src/packaged/cli.py
index d369217..cc675c7 100644
--- a/src/packaged/cli.py
+++ b/src/packaged/cli.py
@@ -70,7 +70,8 @@ def cli(argv: list[str] | None = None) -> int:
         parser.add_argument(
             "--quiet",
             help="Disable all output",
-            action="store_false" if "CI" in os.environ else "store_true",
+            action="store_true",
+            default="CI" in os.environ,
         )
         args = parser.parse_args(argv)
         config = Config(**vars(args))
diff --git a/tests/cli_test.py b/tests/cli_test.py
index 8aae6bf..58da223 100644
--- a/tests/cli_test.py
+++ b/tests/cli_test.py
@@ -1,12 +1,15 @@
 from __future__ import annotations
 
+import os
 from unittest import mock
 
+from pytest import MonkeyPatch
+
 import packaged
 import packaged.cli
 
 
-def test_cli() -> None:
+def test_cli(monkeypatch: MonkeyPatch) -> None:
     """Ensures that CLI passes args to `create_package()` properly."""
     with mock.patch.object(packaged.cli, "create_package") as mocked:
         packaged.cli.cli(["./foo", "pip install foo", "python -m foo"])
@@ -68,3 +71,33 @@ def test_cli() -> None:
         packaged.DEFAULT_PYTHON_VERSION,
         True,
     )
+
+    # Test --quiet when CI is true, regardless of if the flag is passed
+    monkeypatch.setattr(os, "environ", {"CI": "1"})
+    with mock.patch.object(packaged.cli, "create_package") as mocked:
+        packaged.cli.cli(["./some", "pip install some", "python some.py", "./some.bin"])
+
+    # quiet is True
+    mocked.assert_called_with(
+        mock.ANY,
+        "./some",
+        "pip install some",
+        "python some.py",
+        packaged.DEFAULT_PYTHON_VERSION,
+        True,
+    )
+    monkeypatch.setattr(os, "environ", {"CI": "1"})
+    with mock.patch.object(packaged.cli, "create_package") as mocked:
+        packaged.cli.cli(
+            ["./some", "pip install some", "python some.py", "./some.bin", "--quiet"]
+        )
+
+    # quiet is True
+    mocked.assert_called_with(
+        mock.ANY,
+        "./some",
+        "pip install some",
+        "python some.py",
+        packaged.DEFAULT_PYTHON_VERSION,
+        True,
+    )