diff --git a/DB/src/main/java/io/deephaven/db/tables/utils/QueryPerformanceNugget.java b/DB/src/main/java/io/deephaven/db/tables/utils/QueryPerformanceNugget.java
index 7da86b6b5e6..7294f723344 100644
--- a/DB/src/main/java/io/deephaven/db/tables/utils/QueryPerformanceNugget.java
+++ b/DB/src/main/java/io/deephaven/db/tables/utils/QueryPerformanceNugget.java
@@ -52,8 +52,6 @@ public class QueryPerformanceNugget implements Serializable, AutoCloseable {
     private long diffUserCpuNanos;
     private long diffAllocatedBytes;
     private long diffPoolAllocatedBytes;
-    private long diffCollections;
-    private long diffCollectionTimeMs;
 
     private final RuntimeMemory.Sample startMemorySample;
     private final RuntimeMemory.Sample endMemorySample;