diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c
index 7c0e396ce1..f1e8b0b5c2 100644
--- a/src/bin/pg_dump/pg_dump.c
+++ b/src/bin/pg_dump/pg_dump.c
@@ -4574,7 +4574,7 @@ binary_upgrade_set_type_oids_by_type_oid(Archive *fout,
 	{
 		if (fout->remoteVersion >= 140000)
 		{
-			appendPQExpBuffer(upgrade_query,
+			printfPQExpBuffer(upgrade_query,
 							  "SELECT t.oid, t.typarray "
 							  "FROM pg_catalog.pg_type t "
 							  "JOIN pg_catalog.pg_range r "