diff --git a/src/Lucene.Net.Tests/Index/TestSnapshotDeletionPolicy.cs b/src/Lucene.Net.Tests/Index/TestSnapshotDeletionPolicy.cs
index 6e31d5281a..2f94be2a55 100644
--- a/src/Lucene.Net.Tests/Index/TestSnapshotDeletionPolicy.cs
+++ b/src/Lucene.Net.Tests/Index/TestSnapshotDeletionPolicy.cs
@@ -502,7 +502,7 @@ public virtual void TestMissingCommits()
 
             // open a new writer w/ KeepOnlyLastCommit policy, so it will delete "s1"
             // commit.
-            (new IndexWriter(dir, GetConfig(Random, null))).Dispose();
+            new IndexWriter(dir, GetConfig(Random, null)).Dispose();
 
             Assert.IsFalse(SlowFileExists(dir, s1.SegmentsFileName), "snapshotted commit should not exist");
             dir.Dispose();
diff --git a/src/Lucene.Net.Tests/Index/TestStoredFieldsFormat.cs b/src/Lucene.Net.Tests/Index/TestStoredFieldsFormat.cs
index 6e88e45b4e..a7a980d203 100644
--- a/src/Lucene.Net.Tests/Index/TestStoredFieldsFormat.cs
+++ b/src/Lucene.Net.Tests/Index/TestStoredFieldsFormat.cs
@@ -20,7 +20,9 @@ namespace Lucene.Net.Index
      */
 
     using Codec = Lucene.Net.Codecs.Codec;
+#pragma warning disable 612, 618
     using Lucene3xCodec = Lucene.Net.Codecs.Lucene3x.Lucene3xCodec;
+#pragma warning restore 612, 618
 
     /// <summary>
     /// Tests with the default randomized codec. Not really redundant with
@@ -47,4 +49,4 @@ public override void TestWriteReadMerge()
             base.TestWriteReadMerge();
         }
     }
-}
\ No newline at end of file
+}