diff --git a/lucene/core/src/test/org/apache/lucene/index/TestBagOfPostings.java b/lucene/core/src/test/org/apache/lucene/index/TestBagOfPostings.java
index bf6993da75a..f4e66faea1e 100644
--- a/lucene/core/src/test/org/apache/lucene/index/TestBagOfPostings.java
+++ b/lucene/core/src/test/org/apache/lucene/index/TestBagOfPostings.java
@@ -25,9 +25,6 @@ import java.util.Set;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.concurrent.CountDownLatch;
 
-import org.apache.lucene.codecs.Codec;
-import org.apache.lucene.codecs.PostingsFormat;
-import org.apache.lucene.codecs.perfield.PerFieldPostingsFormat;
 import org.apache.lucene.document.Document;
 import org.apache.lucene.document.Field;
 import org.apache.lucene.store.Directory;
@@ -47,17 +44,7 @@ public class TestBagOfPostings extends LuceneTestCase {
     int numTerms = atLeast(300);
     final int maxTermsPerDoc = _TestUtil.nextInt(random(), 10, 20);
 
-    boolean isSimpleText = false;
-    Codec defaultCodec = Codec.getDefault();
-
-    if (defaultCodec.getName().equals("SimpleText")) {
-      isSimpleText = true;
-    } else {
-      PostingsFormat defaultPostingsFormat = defaultCodec.postingsFormat();
-      if (defaultPostingsFormat instanceof PerFieldPostingsFormat) {
-        isSimpleText = ((PerFieldPostingsFormat) defaultPostingsFormat).getPostingsFormatForField("field").getName().equals("SimpleText");
-      }
-    }
+    boolean isSimpleText = "SimpleText".equals(_TestUtil.getPostingsFormat("field"));
 
     if (isSimpleText && TEST_NIGHTLY) {
       // Otherwise test can take way too long (> 2 hours)