diff --git a/src/Lucene.Net.Tests/Index/TestSizeBoundedForceMerge.cs b/src/Lucene.Net.Tests/Index/TestSizeBoundedForceMerge.cs
index fc7a25dc1d..a853f5fcb6 100644
--- a/src/Lucene.Net.Tests/Index/TestSizeBoundedForceMerge.cs
+++ b/src/Lucene.Net.Tests/Index/TestSizeBoundedForceMerge.cs
@@ -51,7 +51,7 @@ private void AddDocs(IndexWriter writer, int numDocs, bool withID)
             writer.Commit();
         }
 
-        private IndexWriterConfig NewWriterConfig()
+        private static IndexWriterConfig NewWriterConfig()
         {
             IndexWriterConfig conf = NewIndexWriterConfig(TEST_VERSION_CURRENT, null);
             conf.SetMaxBufferedDocs(IndexWriterConfig.DISABLE_AUTO_FLUSH);
@@ -401,4 +401,4 @@ public virtual void TestSingleMergeableTooLargeSegment()
             Assert.IsTrue(sis[0].HasDeletions);
         }
     }
-}
\ No newline at end of file
+}