diff --git a/x-pack/plugin/esql/compute/src/main/java/org/elasticsearch/compute/data/Page.java b/x-pack/plugin/esql/compute/src/main/java/org/elasticsearch/compute/data/Page.java
index ecd8003167fa7..b5ea1aa6284ce 100644
--- a/x-pack/plugin/esql/compute/src/main/java/org/elasticsearch/compute/data/Page.java
+++ b/x-pack/plugin/esql/compute/src/main/java/org/elasticsearch/compute/data/Page.java
@@ -34,6 +34,12 @@ public final class Page implements Writeable {
 
     private final int positionCount;
 
+    /**
+     * True if we've called {@link #releaseBlocks()} which causes us to remove the
+     * circuit breaker for the {@link Block}s. The {@link Page} reference should be
+     * removed shortly after this and reading {@linkplain Block}s after release
+     * will fail.
+     */
     private boolean blocksReleased = false;
 
     /**