diff --git a/lms/models/application_instance.py b/lms/models/application_instance.py
index bc83d4590b..453cfaf4d3 100644
--- a/lms/models/application_instance.py
+++ b/lms/models/application_instance.py
@@ -186,7 +186,7 @@ class Settings(StrEnum):
         Settings.HYPOTHESIS_HIDE_AND_REVEAL: JSONSetting(
             Settings.HYPOTHESIS_HIDE_AND_REVEAL,
             SettingFormat.TRI_STATE,
-            default=False,
+            default=True,
         ),
     }
 
diff --git a/tests/functional/views/lti/deep_linking_test.py b/tests/functional/views/lti/deep_linking_test.py
index a28733b175..e04e89b46f 100644
--- a/tests/functional/views/lti/deep_linking_test.py
+++ b/tests/functional/views/lti/deep_linking_test.py
@@ -28,7 +28,7 @@ def test_basic_lti_launch_canvas_deep_linking_url(
         js_config = get_client_config(response)
         assert js_config["mode"] == JSConfig.Mode.FILE_PICKER
         assert js_config["filePicker"] == {
-            "assignmentTypes": ["reading"],
+            "assignmentTypes": ["reading", "hide_and_reveal"],
             "autoGradingEnabled": True,
             "blackboard": {"enabled": None},
             "canvas": {
diff --git a/tests/unit/lms/resources/_js_config/__init___test.py b/tests/unit/lms/resources/_js_config/__init___test.py
index b28b3eb736..28088f272b 100644
--- a/tests/unit/lms/resources/_js_config/__init___test.py
+++ b/tests/unit/lms/resources/_js_config/__init___test.py
@@ -74,8 +74,8 @@ def test_it(
             (True, ["reading", "hide_and_reveal"]),
             # Flag explicitly off.
             (False, ["reading"]),
-            # Flag unset: defaults to off.
-            (None, ["reading"]),
+            # Flag unset: defaults to on.
+            (None, ["reading", "hide_and_reveal"]),
         ],
     )
     def test_it_sets_assignment_types(