diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 1f139fa743..60e3ae6e50 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -1246,8 +1246,10 @@ XLogInsertRecord(XLogRecData *rdata,
 
 		if (!debug_reader)
 			debug_reader = XLogReaderAllocate(wal_segment_size, NULL,
-											  XL_ROUTINE(), NULL);
-
+											  XL_ROUTINE(.page_read = NULL,
+														 .segment_open = NULL,
+														 .segment_close = NULL),
+											  NULL);
 		if (!debug_reader)
 		{
 			appendStringInfoString(&buf, "error decoding record: out of memory");