diff --git a/src/backend/access/brin/brin_revmap.c b/src/backend/access/brin/brin_revmap.c
index 35e53a2bac2..9ed279bf42f 100644
--- a/src/backend/access/brin/brin_revmap.c
+++ b/src/backend/access/brin/brin_revmap.c
@@ -417,6 +417,7 @@ brinRevmapDesummarizeRange(Relation idxrel, BlockNumber heapBlk)
 		xl_brin_desummarize xlrec;
 		XLogRecPtr		recptr;
 
+		xlrec.pagesPerRange = revmap->rm_pagesPerRange;
 		xlrec.heapBlk = heapBlk;
 		xlrec.regOffset = regOffset;
 
diff --git a/src/include/access/brin_xlog.h b/src/include/access/brin_xlog.h
index 89ed334a018..e08f9d73025 100644
--- a/src/include/access/brin_xlog.h
+++ b/src/include/access/brin_xlog.h
@@ -134,7 +134,7 @@ typedef struct xl_brin_desummarize
 {
 	BlockNumber	pagesPerRange;
 	/* page number location to set to invalid */
-	OffsetNumber heapBlk;
+	BlockNumber heapBlk;
 	/* offset of item to delete in regular index page */
 	OffsetNumber regOffset;
 } xl_brin_desummarize;