diff --git a/sql/sql_insert.cc b/sql/sql_insert.cc
index 0acb7e747ad..b764263265e 100644
--- a/sql/sql_insert.cc
+++ b/sql/sql_insert.cc
@@ -3555,7 +3555,8 @@ int select_insert::prepare2(void)
 {
   DBUG_ENTER("select_insert::prepare2");
   if (thd->lex->current_select->options & OPTION_BUFFER_RESULT &&
-      thd->locked_tables_mode <= LTM_LOCK_TABLES)
+      thd->locked_tables_mode <= LTM_LOCK_TABLES &&
+      !thd->lex->describe)
     table->file->ha_start_bulk_insert((ha_rows) 0);
   DBUG_RETURN(0);
 }
diff --git a/storage/tokudb/mysql-test/tokudb_mariadb/r/mdev5426.result b/storage/tokudb/mysql-test/tokudb_mariadb/r/mdev5426.result
new file mode 100644
index 00000000000..086c4f4cc18
--- /dev/null
+++ b/storage/tokudb/mysql-test/tokudb_mariadb/r/mdev5426.result
@@ -0,0 +1,6 @@
+CREATE TABLE t1 (i INT) ENGINE=TokuDB;
+EXPLAIN INSERT INTO t1 SELECT * FROM t1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	1	Using temporary
+INSERT INTO t1 SELECT * FROM t1;
+DROP TABLE t1;
diff --git a/storage/tokudb/mysql-test/tokudb_mariadb/t/mdev5426.test b/storage/tokudb/mysql-test/tokudb_mariadb/t/mdev5426.test
new file mode 100644
index 00000000000..b16e81353ff
--- /dev/null
+++ b/storage/tokudb/mysql-test/tokudb_mariadb/t/mdev5426.test
@@ -0,0 +1,10 @@
+
+CREATE TABLE t1 (i INT) ENGINE=TokuDB;
+EXPLAIN INSERT INTO t1 SELECT * FROM t1;
+
+--connect con1,localhost,root,,test
+INSERT INTO t1 SELECT * FROM t1;
+
+--connection default
+--disconnect con1
+DROP TABLE t1;