diff --git a/unisportomat/quiz/serializers.py b/unisportomat/quiz/serializers.py
index 44c5393808a19926c9763f3714621d4092e34d79..9756a8e190171e12071bfbd365b05c6dc05813f3 100644
--- a/unisportomat/quiz/serializers.py
+++ b/unisportomat/quiz/serializers.py
@@ -51,7 +51,7 @@ class SmallSportListSerializer(serializers.BaseSerializer):
         for sport, boolean in sport_filled_tuples:
             serialized_data.append(
                 {
-                    "pk": sport.pk,
+                    "id": sport.pk,
                     "name": sport.name,
                     "url": sport.url,
                     "is_filled": boolean,
@@ -73,7 +73,7 @@ class SingleSportSerializer(serializers.BaseSerializer):
 
         serialized_data = {}
 
-        serialized_data["pk"] = sport.pk
+        serialized_data["id"] = sport.pk
         serialized_data["name"] = sport.name
         serialized_data["url"] = sport.url
 
@@ -82,7 +82,7 @@ class SingleSportSerializer(serializers.BaseSerializer):
         for criterion in sport.criteria_ratings.iterator():
             criterion_data = {}
 
-            criterion_data["pk"] = criterion.pk
+            criterion_data["id"] = criterion.pk
             criterion_data["name"] = criterion.name
 
             criterion_data["value"] = sport.get_rating(criterion)