diff --git a/mysql-test/suite/sql_sequence/create.result b/mysql-test/suite/sql_sequence/create.result
index 073cb1ac390..1b02a9a2c11 100644
--- a/mysql-test/suite/sql_sequence/create.result
+++ b/mysql-test/suite/sql_sequence/create.result
@@ -716,4 +716,12 @@ CREATE SEQUENCE seq1 START WITH 2;
 CREATE TRIGGER s1 BEFORE UPDATE ON seq1 FOR EACH ROW SET @a= 5;
 ERROR HY000: Trigger's 'seq1' is view, temporary table or sequence
 DROP SEQUENCE seq1;
+#
+# MDEV-29771: Server crashes in check_sequence_fields upon
+# CREATE TABLE .. SEQUENCE=1 AS SELECT ..
+#
+create table s sequence=1 as select 1;
+ERROR HY000: Sequence 'test.s' table structure is invalid (Wrong number of columns)
+#
 # End of 10.4 test
+#
diff --git a/mysql-test/suite/sql_sequence/create.test b/mysql-test/suite/sql_sequence/create.test
index fa85c0a8f0a..aa09a899d76 100644
--- a/mysql-test/suite/sql_sequence/create.test
+++ b/mysql-test/suite/sql_sequence/create.test
@@ -554,4 +554,14 @@ CREATE SEQUENCE seq1 START WITH 2;
 CREATE TRIGGER s1 BEFORE UPDATE ON seq1 FOR EACH ROW SET @a= 5;
 DROP SEQUENCE seq1;
 
+--echo #
+--echo # MDEV-29771: Server crashes in check_sequence_fields upon
+--echo # CREATE TABLE .. SEQUENCE=1 AS SELECT ..
+--echo #
+
+--error ER_SEQUENCE_INVALID_TABLE_STRUCTURE
+create table s sequence=1 as select 1;
+
+--echo #
 --echo # End of 10.4 test
+--echo #
diff --git a/sql/sql_sequence.cc b/sql/sql_sequence.cc
index 4ba1e6092bd..9387d2527fe 100644
--- a/sql/sql_sequence.cc
+++ b/sql/sql_sequence.cc
@@ -186,7 +186,8 @@ void sequence_definition::store_fields(TABLE *table)
     true        Failure
 */
 
-bool check_sequence_fields(LEX *lex, List<Create_field> *fields)
+bool check_sequence_fields(LEX *lex, List<Create_field> *fields,
+                           const LEX_CSTRING db, const LEX_CSTRING table_name)
 {
   Create_field *field;
   List_iterator_fast<Create_field> it(*fields);
@@ -234,8 +235,7 @@ bool check_sequence_fields(LEX *lex, List<Create_field> *fields)
 
 err:
   my_error(ER_SEQUENCE_INVALID_TABLE_STRUCTURE, MYF(0),
-           lex->first_select_lex()->table_list.first->db.str,
-           lex->first_select_lex()->table_list.first->table_name.str, reason);
+           db.str, table_name.str, reason);
   DBUG_RETURN(TRUE);
 }
 
diff --git a/sql/sql_sequence.h b/sql/sql_sequence.h
index 29c589e67cd..fba04686d69 100644
--- a/sql/sql_sequence.h
+++ b/sql/sql_sequence.h
@@ -162,6 +162,8 @@ public:
 
 class Create_field;
 extern bool prepare_sequence_fields(THD *thd, List<Create_field> *fields);
-extern bool check_sequence_fields(LEX *lex, List<Create_field> *fields);
+extern bool check_sequence_fields(LEX *lex, List<Create_field> *fields,
+                                  const LEX_CSTRING db,
+                                  const LEX_CSTRING table_name);
 extern bool sequence_insert(THD *thd, LEX *lex, TABLE_LIST *table_list);
 #endif /* SQL_SEQUENCE_INCLUDED */
diff --git a/sql/sql_table.cc b/sql/sql_table.cc
index 6f41b70c69f..218bf1cfcaa 100644
--- a/sql/sql_table.cc
+++ b/sql/sql_table.cc
@@ -3471,7 +3471,8 @@ mysql_prepare_create_table(THD *thd, HA_CREATE_INFO *create_info,
     }
 
     /* The user specified fields: check that structure is ok */
-    if (check_sequence_fields(thd->lex, &alter_info->create_list))
+    if (check_sequence_fields(thd->lex, &alter_info->create_list,
+                              db, table_name))
       DBUG_RETURN(TRUE);
   }