diff --git a/server/src/test/java/org/elasticsearch/index/mapper/BlockSourceReaderTests.java b/server/src/test/java/org/elasticsearch/index/mapper/BlockSourceReaderTests.java
index 137a9cce34f8d..00e60f6e2cba1 100644
--- a/server/src/test/java/org/elasticsearch/index/mapper/BlockSourceReaderTests.java
+++ b/server/src/test/java/org/elasticsearch/index/mapper/BlockSourceReaderTests.java
@@ -62,7 +62,7 @@ private void loadBlock(LeafReaderContext ctx, Consumer<TestBlock> test) throws I
         assertThat(loader.rowStrideStoredFieldSpec(), equalTo(StoredFieldsSpec.NEEDS_SOURCE));
         BlockLoaderStoredFieldsFromLeafLoader storedFields = new BlockLoaderStoredFieldsFromLeafLoader(
             StoredFieldLoader.fromSpec(loader.rowStrideStoredFieldSpec()).getLoader(ctx, null),
-            true
+            loader.rowStrideStoredFieldSpec().requiresSource() ? SourceLoader.FROM_STORED_SOURCE.leaf(ctx.reader(), null) : null
         );
         BlockLoader.Builder builder = loader.builder(TestBlock.FACTORY, 1);
         storedFields.advanceTo(0);