diff --git a/storage/innodb_plugin/handler/handler0alter.cc b/storage/innodb_plugin/handler/handler0alter.cc
index 9836fb11ebc..e474c318c58 100644
--- a/storage/innodb_plugin/handler/handler0alter.cc
+++ b/storage/innodb_plugin/handler/handler0alter.cc
@@ -920,9 +920,8 @@ convert_error:
 		trx_commit_for_mysql(prebuilt->trx);
 	}
 
-	ut_d(dict_table_check_for_dup_indexes(innodb_table, FALSE));
-
 	if (dict_locked) {
+		ut_d(dict_table_check_for_dup_indexes(innodb_table, FALSE));
 		row_mysql_unlock_data_dictionary(trx);
 	}