diff --git a/common/djangoapps/student/tests/test_views.py b/common/djangoapps/student/tests/test_views.py
index 51b029b73b..de7414bfb9 100644
--- a/common/djangoapps/student/tests/test_views.py
+++ b/common/djangoapps/student/tests/test_views.py
@@ -12,24 +12,28 @@ from django.core.urlresolvers import reverse
 from django.test import RequestFactory, TestCase
 from django.test.utils import override_settings
 from django.utils.timezone import now
-from edx_oauth2_provider.constants import AUTHORIZED_CLIENTS_SESSION_KEY
-from edx_oauth2_provider.tests.factories import ClientFactory, TrustedClientFactory
-from milestones.tests.utils import MilestonesTestCaseMixin
 from mock import patch
 from opaque_keys import InvalidKeyError
-from pyquery import PyQuery as pq
 
 from bulk_email.models import BulkEmailFlag
+from course_modes.models import CourseMode
+from edx_oauth2_provider.constants import AUTHORIZED_CLIENTS_SESSION_KEY
+from edx_oauth2_provider.tests.factories import (ClientFactory,
+                                                 TrustedClientFactory)
 from entitlements.tests.factories import CourseEntitlementFactory
+from milestones.tests.utils import MilestonesTestCaseMixin
 from openedx.core.djangoapps.catalog.tests.factories import ProgramFactory
 from openedx.core.djangoapps.content.course_overviews.models import CourseOverview
 from openedx.core.djangoapps.content.course_overviews.tests.factories import CourseOverviewFactory
+from pyquery import PyQuery as pq
 from student.cookies import get_user_info_cookie_data
 from student.helpers import DISABLE_UNENROLL_CERT_STATES
 from student.models import CourseEnrollment, UserProfile
 from student.signals import REFUND_ORDER
 from student.tests.factories import CourseEnrollmentFactory, UserFactory
-from util.milestones_helpers import get_course_milestones, remove_prerequisite_course, set_prerequisite_courses
+from util.milestones_helpers import (get_course_milestones,
+                                     remove_prerequisite_course,
+                                     set_prerequisite_courses)
 from util.testing import UrlResetMixin
 from xmodule.modulestore import ModuleStoreEnum
 from xmodule.modulestore.tests.django_utils import SharedModuleStoreTestCase
@@ -350,7 +354,8 @@ class StudentDashboardTests(SharedModuleStoreTestCase, MilestonesTestCaseMixin):
     @patch('student.views.get_visible_sessions_for_entitlement')
     @patch('student.views.get_pseudo_session_for_entitlement')
     @patch.object(CourseOverview, 'get_from_id')
-    def test_unfulfilled_entitlement(self, mock_course_overview, mock_pseudo_session, mock_course_runs, mock_get_programs):
+    def test_unfulfilled_entitlement(self, mock_course_overview, mock_pseudo_session,
+                                     mock_course_runs, mock_get_programs):
         """
         When a learner has an unfulfilled entitlement, their course dashboard should have:
             - a hidden 'View Course' button
@@ -359,9 +364,9 @@ class StudentDashboardTests(SharedModuleStoreTestCase, MilestonesTestCaseMixin):
             - a related programs message
         """
         program = ProgramFactory()
-        CourseEntitlementFactory(user=self.user, course_uuid=program['courses'][0]['uuid'])
+        CourseEntitlementFactory.create(user=self.user, course_uuid=program['courses'][0]['uuid'])
         mock_get_programs.return_value = [program]
-        mock_course_overview.return_value = CourseOverviewFactory(start=self.TOMORROW)
+        mock_course_overview.return_value = CourseOverviewFactory.create(start=self.TOMORROW)
         mock_course_runs.return_value = [
             {
                 'key': 'course-v1:FAKE+FA1-MA1.X+3T2017',
@@ -380,6 +385,29 @@ class StudentDashboardTests(SharedModuleStoreTestCase, MilestonesTestCaseMixin):
         self.assertIn('<div class="course-entitlement-selection-container ">', response.content)
         self.assertIn('Related Programs:', response.content)
 
+        # If an entitlement has already been redeemed by the user for a course run, do not let the run be selectable
+        enrollment = CourseEnrollmentFactory(
+            user=self.user, course_id=unicode(mock_course_overview.return_value.id), mode=CourseMode.VERIFIED
+        )
+        CourseEntitlementFactory.create(
+            user=self.user, course_uuid=program['courses'][0]['uuid'], enrollment_course_run=enrollment
+        )
+
+        mock_course_runs.return_value = [
+            {
+                'key': 'course-v1:edX+toy+2012_Fall',
+                'enrollment_end': str(self.TOMORROW),
+                'pacing_type': 'instructor_paced',
+                'type': 'verified'
+            }
+        ]
+        response = self.client.get(self.path)
+        # There should be two entitlements on the course page, one prompting for a mandatory session, but no
+        # select option for the courses as there is only the single course run which has already been redeemed
+        self.assertEqual(response.content.count('<li class="course-item">'), 2)
+        self.assertIn('You must select a session to access the course.', response.content)
+        self.assertNotIn('To access the course, select a session.', response.content)
+
     @patch('student.views.get_visible_sessions_for_entitlement')
     @patch.object(CourseOverview, 'get_from_id')
     def test_unfulfilled_expired_entitlement(self, mock_course_overview, mock_course_runs):
diff --git a/openedx/core/djangoapps/catalog/utils.py b/openedx/core/djangoapps/catalog/utils.py
index b1990c1277..20aaa2a35b 100644
--- a/openedx/core/djangoapps/catalog/utils.py
+++ b/openedx/core/djangoapps/catalog/utils.py
@@ -8,15 +8,14 @@ from django.conf import settings
 from django.core.cache import cache
 from django.core.exceptions import ObjectDoesNotExist
 from edx_rest_api_client.client import EdxRestApiClient
+from pytz import UTC
 
-from openedx.core.djangoapps.catalog.cache import (
-    PROGRAM_CACHE_KEY_TPL,
-    SITE_PROGRAM_UUIDS_CACHE_KEY_TPL
-)
+from openedx.core.djangoapps.catalog.cache import (PROGRAM_CACHE_KEY_TPL,
+                                                   SITE_PROGRAM_UUIDS_CACHE_KEY_TPL)
 from openedx.core.djangoapps.catalog.models import CatalogIntegration
 from openedx.core.lib.edx_api_utils import get_edx_api_data
 from openedx.core.lib.token_utils import JwtBuilder
-from pytz import UTC
+from student.models import CourseEnrollment
 
 logger = logging.getLogger(__name__)
 
@@ -276,12 +275,16 @@ def get_fulfillable_course_runs_for_entitlement(entitlement, course_runs):
     2) A user can enroll in
     3) A user can upgrade in
     4) Are published
+    5) Are not enrolled in already for an active session
 
     These are the only sessions that can be selected for an entitlement.
     """
 
     enrollable_sessions = []
 
+    enrollments_for_user = CourseEnrollment.enrollments_for_user(entitlement.user).filter(mode=entitlement.mode)
+    enrolled_sessions = frozenset([str(e.course_id) for e in enrollments_for_user])
+
     # Only show published course runs that can still be enrolled and upgraded
     now = datetime.datetime.now(UTC)
     for course_run in course_runs:
@@ -295,7 +298,8 @@ def get_fulfillable_course_runs_for_entitlement(entitlement, course_runs):
         enrollment_start = course_run.get('enrollment_start')
         enrollment_end = course_run.get('enrollment_end')
         can_enroll = ((not enrollment_start or datetime_parse(enrollment_start) < now)
-                      and (not enrollment_end or datetime_parse(enrollment_end) > now))
+                      and (not enrollment_end or datetime_parse(enrollment_end) > now)
+                      and course_run.get('key') not in enrolled_sessions)
 
         # Only upgrade-able courses will be displayed
         can_upgrade = False