diff --git a/pgxn/neon_walredo/inmem_smgr.c b/pgxn/neon_walredo/inmem_smgr.c
index 74cd5ac601..9e192432d0 100644
--- a/pgxn/neon_walredo/inmem_smgr.c
+++ b/pgxn/neon_walredo/inmem_smgr.c
@@ -32,8 +32,8 @@
 
 #include "inmem_smgr.h"
 
-/* Size of the in-memory smgr */
-#define MAX_PAGES 64
+/* Size of the in-memory smgr: XLR_MAX_BLOCK_ID is 32, but we can update up to 3 forks for each block */
+#define MAX_PAGES 100
 
 /* If more than WARN_PAGES are used, print a warning in the log */
 #define WARN_PAGES 32
@@ -292,7 +292,7 @@ inmem_write(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
 			 blocknum,
 			 used_pages);
 		if (used_pages == MAX_PAGES)
-			elog(ERROR, "Inmem storage overflow");
+			ereport(ERROR, (errmsg("Inmem storage overflow"), errbacktrace()));
 
 		pg = used_pages;
 		used_pages++;