diff --git a/Duplicati/Library/Main/Database/LocalDatabase.cs b/Duplicati/Library/Main/Database/LocalDatabase.cs
index af97d2afc..ea108559b 100644
--- a/Duplicati/Library/Main/Database/LocalDatabase.cs
+++ b/Duplicati/Library/Main/Database/LocalDatabase.cs
@@ -789,7 +789,7 @@ ON
                 if (itemswithnoblocklisthash != 0)
                     throw new InvalidDataException(string.Format("Found {0} file(s) with missing blocklist hashes", itemswithnoblocklisthash));
 
-                if (cmd.ExecuteScalarInt64(@"SELECT COUNT(*) FROM ""Blockset"" WHERE ""Length"" != 0 AND ""ID"" NOT IN (SELECT ""BlocksetId"" FROM ""BlocksetEntry"")") != 0)
+                if (cmd.ExecuteScalarInt64(@"SELECT COUNT(*) FROM ""Blockset"" WHERE ""Length"" > 0 AND ""ID"" NOT IN (SELECT ""BlocksetId"" FROM ""BlocksetEntry"")") != 0)
                 {
                     throw new Exception("Detected non-empty blocksets with no associated blocks!");
                 }