diff --git a/openedx/features/subscriptions/api/v1/views.py b/openedx/features/subscriptions/api/v1/views.py
index 340f60cead4b..6516db3fa405 100644
--- a/openedx/features/subscriptions/api/v1/views.py
+++ b/openedx/features/subscriptions/api/v1/views.py
@@ -32,7 +32,7 @@ def get_queryset(self):
         if return_only_valid_subscriptions:
             return UserSubscription.get_valid_subscriptions(self.request.site, username=username)
 
-        return UserSubscription.objects.filter(user__username=username)
+        return UserSubscription.objects.filter(site=self.request.site, user__username=username)
 
 
 class SubscriptionRetrieveUpdateView(PutAsCreateMixin, RetrieveUpdateAPIView):