diff --git a/src/main/java/bdv/server/CellHandler.java b/src/main/java/bdv/server/CellHandler.java
index b29427e81d9edebcce864fa7b394fd25b74403eb..47d6193e60b8dbd8cb25502cebe471691cdb23cc 100644
--- a/src/main/java/bdv/server/CellHandler.java
+++ b/src/main/java/bdv/server/CellHandler.java
@@ -398,6 +398,8 @@ public class CellHandler extends ContextHandler {
 
             final int level = Integer.parseInt(parts[4]);
             final short[] data = getCachedVolatileCellData(parts, level);
+            compressedAccumulation.addAndGet(data.length * 2);
+            uncompressedAccumulation.addAndGet(data.length * 2);
             respondWithShortArray(response, data);
 
             response.setContentType("application/octet-stream");