diff --git a/openedx/core/djangoapps/content/course_overviews/models.py b/openedx/core/djangoapps/content/course_overviews/models.py
index d19019f7aa20..8ac975545e54 100644
--- a/openedx/core/djangoapps/content/course_overviews/models.py
+++ b/openedx/core/djangoapps/content/course_overviews/models.py
@@ -268,7 +268,7 @@ def _create_or_update(cls, course):  # lint-amnesty, pylint: disable=too-many-st
         # it to be a float like everything else.
         if isinstance(course.entrance_exam_minimum_score_pct, int):
             course_overview.entrance_exam_minimum_score_pct = course.entrance_exam_minimum_score_pct / 100
-        else:
+        elif course.entrance_exam_minimum_score_pct is not None:
             course_overview.entrance_exam_minimum_score_pct = course.entrance_exam_minimum_score_pct
 
         course_overview.force_on_flexible_peer_openassessments = course.force_on_flexible_peer_openassessments
diff --git a/openedx/core/djangoapps/content/course_overviews/tests/test_course_overviews.py b/openedx/core/djangoapps/content/course_overviews/tests/test_course_overviews.py
index d8e317502f58..874c9af2c426 100644
--- a/openedx/core/djangoapps/content/course_overviews/tests/test_course_overviews.py
+++ b/openedx/core/djangoapps/content/course_overviews/tests/test_course_overviews.py
@@ -625,6 +625,16 @@ def test_mongo_course_overview_generation(self):
         CourseOverview.load_from_module_store(course_key)
         assert CourseOverview.objects.filter(id=course_key).exists()
 
+    def test_null_entrance_exam_minimum_score(self):
+        """
+        Tests that course overview can be created when entrance_exam_minimum_score is null.
+        """
+        course = CourseFactory.create()
+        course.entrance_exam_minimum_score_pct = None
+        course_overview = CourseOverview._create_or_update(course)  # pylint: disable=protected-access
+        assert course_overview.entrance_exam_minimum_score_pct == \
+            CourseOverview.entrance_exam_minimum_score_pct.field.default
+
 
 @ddt.ddt
 class CourseOverviewImageSetTestCase(ModuleStoreTestCase):