diff --git a/server/src/test/java/org/elasticsearch/index/codec/vectors/diskbbq/ES920DiskBBQVectorsFormatTests.java b/server/src/test/java/org/elasticsearch/index/codec/vectors/diskbbq/ES920DiskBBQVectorsFormatTests.java
index 15a2a13deed40..5d94a8b4ab0e1 100644
--- a/server/src/test/java/org/elasticsearch/index/codec/vectors/diskbbq/ES920DiskBBQVectorsFormatTests.java
+++ b/server/src/test/java/org/elasticsearch/index/codec/vectors/diskbbq/ES920DiskBBQVectorsFormatTests.java
@@ -42,7 +42,6 @@
 import org.apache.lucene.tests.util.TestUtil;
 import org.apache.lucene.util.BytesRef;
 import org.elasticsearch.common.logging.LogConfigurator;
-import org.elasticsearch.index.codec.vectors.diskbbq.next.ESNextDiskBBQVectorsFormat;
 import org.elasticsearch.index.mapper.vectors.DenseVectorFieldMapper;
 import org.junit.AssumptionViolatedException;
 import org.junit.Before;
@@ -305,10 +304,6 @@ public void testOneRepeatedVector() throws IOException {
     }
 
     public void testIndexSortOnFlush() throws IOException {
-        format = new ESNextDiskBBQVectorsFormat(
-            ESNextDiskBBQVectorsFormat.MIN_VECTORS_PER_CLUSTER,
-            ESNextDiskBBQVectorsFormat.MIN_CENTROIDS_PER_PARENT_CLUSTER
-        );
         IndexWriterConfig config = newIndexWriterConfig().setCodec(TestUtil.alwaysKnnVectorsFormat(format))
             .setIndexSort(new Sort(new SortField("sort", SortField.Type.STRING)))
             .setMergePolicy(NoMergePolicy.INSTANCE);
diff --git a/server/src/test/java/org/elasticsearch/index/codec/vectors/diskbbq/es94/ES940DiskBBQVectorsFormatTests.java b/server/src/test/java/org/elasticsearch/index/codec/vectors/diskbbq/es94/ES940DiskBBQVectorsFormatTests.java
index 0e10196b40d63..b5962c642c31c 100644
--- a/server/src/test/java/org/elasticsearch/index/codec/vectors/diskbbq/es94/ES940DiskBBQVectorsFormatTests.java
+++ b/server/src/test/java/org/elasticsearch/index/codec/vectors/diskbbq/es94/ES940DiskBBQVectorsFormatTests.java
@@ -43,7 +43,6 @@
 import org.apache.lucene.tests.util.TestUtil;
 import org.apache.lucene.util.BytesRef;
 import org.elasticsearch.common.logging.LogConfigurator;
-import org.elasticsearch.index.codec.vectors.diskbbq.next.ESNextDiskBBQVectorsFormat;
 import org.elasticsearch.index.mapper.vectors.DenseVectorFieldMapper;
 import org.elasticsearch.search.vectors.IVFKnnSearchStrategy;
 import org.junit.Before;
@@ -363,10 +362,6 @@ public void testRestrictiveFilterSparse() throws IOException {
     }
 
     public void testIndexSortOnFlush() throws IOException {
-        format = new ESNextDiskBBQVectorsFormat(
-            ESNextDiskBBQVectorsFormat.MIN_VECTORS_PER_CLUSTER,
-            ESNextDiskBBQVectorsFormat.MIN_CENTROIDS_PER_PARENT_CLUSTER
-        );
         IndexWriterConfig config = newIndexWriterConfig().setCodec(TestUtil.alwaysKnnVectorsFormat(format))
             .setIndexSort(new Sort(new SortField("sort", SortField.Type.STRING)))
             .setMergePolicy(NoMergePolicy.INSTANCE);
diff --git a/server/src/test/java/org/elasticsearch/index/codec/vectors/diskbbq/next/ESNextDiskBBQVectorsFormatTests.java b/server/src/test/java/org/elasticsearch/index/codec/vectors/diskbbq/next/ESNextDiskBBQVectorsFormatTests.java
index b3ba1c6105b11..548444047556a 100644
--- a/server/src/test/java/org/elasticsearch/index/codec/vectors/diskbbq/next/ESNextDiskBBQVectorsFormatTests.java
+++ b/server/src/test/java/org/elasticsearch/index/codec/vectors/diskbbq/next/ESNextDiskBBQVectorsFormatTests.java
@@ -362,7 +362,6 @@ public void testRestrictiveFilterSparse() throws IOException {
     }
 
     public void testIndexSortOnFlush() throws IOException {
-        format = new ESNextDiskBBQVectorsFormat(MIN_VECTORS_PER_CLUSTER, MIN_CENTROIDS_PER_PARENT_CLUSTER);
         IndexWriterConfig config = newIndexWriterConfig().setCodec(TestUtil.alwaysKnnVectorsFormat(format))
             .setIndexSort(new Sort(new SortField("sort", SortField.Type.STRING)))
             .setMergePolicy(NoMergePolicy.INSTANCE);