diff --git a/src/bin/pg_verify_checksums/pg_verify_checksums.c b/src/bin/pg_verify_checksums/pg_verify_checksums.c
index a941236563..965ec70557 100644
--- a/src/bin/pg_verify_checksums/pg_verify_checksums.c
+++ b/src/bin/pg_verify_checksums/pg_verify_checksums.c
@@ -78,7 +78,7 @@ skipfile(char *fn)
 static void
 scan_file(char *fn, int segmentno)
 {
-	char		buf[BLCKSZ];
+	char	   *buf = palloc(BLCKSZ);
 	PageHeader	header = (PageHeader) buf;
 	int			f;
 	int			blockno;
@@ -127,6 +127,8 @@ scan_file(char *fn, int segmentno)
 				_("%s: checksums verified in file \"%s\"\n"), progname, fn);
 
 	close(f);
+
+	pfree(buf);
 }
 
 static void