diff --git a/backblaze/src/main/java/ch/cyberduck/core/b2/B2LargeUploadPartService.java b/backblaze/src/main/java/ch/cyberduck/core/b2/B2LargeUploadPartService.java
index b90a65f7a57..b6146bfc422 100644
--- a/backblaze/src/main/java/ch/cyberduck/core/b2/B2LargeUploadPartService.java
+++ b/backblaze/src/main/java/ch/cyberduck/core/b2/B2LargeUploadPartService.java
@@ -20,6 +20,7 @@
 import ch.cyberduck.core.PathContainerService;
 import ch.cyberduck.core.SimplePathPredicate;
 import ch.cyberduck.core.exception.BackgroundException;
+import ch.cyberduck.core.preferences.HostPreferences;
 
 import org.apache.commons.codec.binary.StringUtils;
 import org.apache.logging.log4j.LogManager;
@@ -121,7 +122,7 @@ public List<B2UploadPartResponse> list(final String fileid) throws BackgroundExc
             Integer startPartNumber = null;
             do {
                 final B2ListPartsResponse response = session.getClient().listParts(
-                        fileid, startPartNumber, null);
+                        fileid, startPartNumber, new HostPreferences(session.getHost()).getInteger("b2.listing.chunksize"));
                 completed.addAll(response.getFiles());
                 startPartNumber = response.getNextPartNumber();
             }