diff --git a/src/FilterLists.Services/Snapshot/SnapshotBatch.cs b/src/FilterLists.Services/Snapshot/SnapshotBatch.cs
index 2244a3181..b31db309b 100644
--- a/src/FilterLists.Services/Snapshot/SnapshotBatch.cs
+++ b/src/FilterLists.Services/Snapshot/SnapshotBatch.cs
@@ -32,7 +32,7 @@ public void Save()
         }
 
         private IQueryable<Rule> GetExistingRules() =>
-            dbContext.Rules.Where(r => lines.Contains(r.Raw));
+            dbContext.Rules.Join(lines, rule => rule.Raw, line => line, (rule, line) => rule);
 
         private List<Rule> CreateNewRules(IQueryable<Rule> existingRules) =>
             lines.Except(existingRules.Select(r => r.Raw)).Select(r => new Rule {Raw = r}).ToList();