diff --git a/backend/experiment/rules/tests/test_toontjehoger_4_absolute.py b/backend/experiment/rules/tests/test_toontjehoger_4_absolute.py
index 27a0f06ba..8f8871b35 100644
--- a/backend/experiment/rules/tests/test_toontjehoger_4_absolute.py
+++ b/backend/experiment/rules/tests/test_toontjehoger_4_absolute.py
@@ -94,7 +94,7 @@ def test_validate_invalid_tags(self):
             "Albania 2018 - Eugent Bushpepa,Mall,7.046,45.0,ToontjeHoger4Absolute/audio-5.mp3,c,5\n"
             "Albania 2018 - Eugent Bushpepa,Mall,7.046,45.0,ToontjeHoger4Absolute/audio-6.mp3,d,6\n"
         )
-        playlist = PlaylistModel.objects.create(name='TestToontjeHoger4Absolute')
+        playlist = PlaylistModel.objects.create(name='TestToontjeHoger4AbsoluteInvalidTags')
         playlist.csv = csv_data
         playlist.update_sections()
 
diff --git a/backend/experiment/rules/toontjehoger_4_absolute.py b/backend/experiment/rules/toontjehoger_4_absolute.py
index b725385e5..53b6dacdf 100644
--- a/backend/experiment/rules/toontjehoger_4_absolute.py
+++ b/backend/experiment/rules/toontjehoger_4_absolute.py
@@ -213,7 +213,12 @@ def validate_playlist(self, playlist: Playlist):
         errors += self.validate_playlist_groups(groups)
 
         # Check if the tags are 'a', 'b' or 'c'
-        tags = list(playlist.section_set.values_list('tag', flat=True).distinct())
+        tags = list(
+            playlist.section_set
+            .values_list('tag', flat=True)
+            .distinct()
+            .order_by('tag')
+        )
 
         if tags != ['a', 'b', 'c']:
             errors.append("Tags in playlist sections should be 'a', 'b' or 'c'. This playlist has tags: {}".format(tags))