diff --git a/home-mixer/candidate_hydrators/vf_candidate_hydrator.rs b/home-mixer/candidate_hydrators/vf_candidate_hydrator.rs
index 264a7a8e..b6554ed6 100644
--- a/home-mixer/candidate_hydrators/vf_candidate_hydrator.rs
+++ b/home-mixer/candidate_hydrators/vf_candidate_hydrator.rs
@@ -83,6 +83,8 @@ impl Hydrator<ScoredPostsQuery, PostCandidate> for VFCandidateHydrator {
             }
         }
 
+        in_network_ids.sort_unstable();
+        in_network_ids.dedup();
         oon_ids.sort_unstable();
         oon_ids.dedup();