diff --git a/cdm/src/main/java/ucar/nc2/write/Nc4ChunkingDefault.java b/cdm/src/main/java/ucar/nc2/write/Nc4ChunkingDefault.java
index 8100e3ab16..96276016bc 100644
--- a/cdm/src/main/java/ucar/nc2/write/Nc4ChunkingDefault.java
+++ b/cdm/src/main/java/ucar/nc2/write/Nc4ChunkingDefault.java
@@ -73,10 +73,10 @@ public boolean isChunked(Variable v) {
 
   @Override
   public long[] computeChunking(Variable v) {
-    /* check attribute
+
     int[] resultFromAtt = computeChunkingFromAttribute(v);
     if (resultFromAtt != null)
-      return convertToLong(resultFromAtt); */
+      return convertToLong(resultFromAtt);
 
     int maxElements = defaultChunkSize / v.getElementSize();