diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c
index a8c141b689..404f5d8675 100644
--- a/src/bin/pg_dump/pg_dump.c
+++ b/src/bin/pg_dump/pg_dump.c
@@ -9397,7 +9397,7 @@ determineNotNullFlags(Archive *fout, PGresult *res, int r,
 			 */
 			if (dopt->binary_upgrade &&
 				!tbinfo->ispartition &&
-				!tbinfo->notnull_islocal)
+				!tbinfo->notnull_islocal[j])
 			{
 				tbinfo->notnull_constrs[j] =
 					pstrdup(PQgetvalue(res, r, i_notnull_name));