diff --git a/server/src/main/java/org/opensearch/index/shard/IndexShard.java b/server/src/main/java/org/opensearch/index/shard/IndexShard.java
index b36099dfd3465..67852a17237a3 100644
--- a/server/src/main/java/org/opensearch/index/shard/IndexShard.java
+++ b/server/src/main/java/org/opensearch/index/shard/IndexShard.java
@@ -304,8 +304,8 @@ public IndexShard(
         final IndexCache indexCache,
         final MapperService mapperService,
         final SimilarityService similarityService,
-        final @Nullable EngineFactory engineFactory,
-        final @Nullable EngineConfigFactory engineConfigFactory,
+        final EngineFactory engineFactory,
+        final EngineConfigFactory engineConfigFactory,
         final IndexEventListener indexEventListener,
         final CheckedFunction<DirectoryReader, DirectoryReader, IOException> indexReaderWrapper,
         final ThreadPool threadPool,