diff --git a/mysql-test/r/create.result b/mysql-test/r/create.result
index 3f8083a0e20..5f885ad199b 100644
--- a/mysql-test/r/create.result
+++ b/mysql-test/r/create.result
@@ -773,3 +773,5 @@ Warnings:
 Warning	1071	Specified key was too long; max key length is 765 bytes
 insert into t1 values('aaa');
 drop table t1;
+create table t1 (upgrade int);
+drop table t1;
diff --git a/mysql-test/t/create.test b/mysql-test/t/create.test
index 07edbf206fe..db73782fdbf 100644
--- a/mysql-test/t/create.test
+++ b/mysql-test/t/create.test
@@ -674,4 +674,10 @@ create table t1(f1 varchar(800) binary not null, key(f1)) engine = innodb
 insert into t1 values('aaa');
 drop table t1;
 
+#
+# Bug#21772: can not name a column 'upgrade' when create a table
+#
+create table t1 (upgrade int);
+drop table t1;
+
 # End of 5.0 tests
diff --git a/sql/sql_yacc.yy b/sql/sql_yacc.yy
index aee810e75ad..97f6cdd27e4 100644
--- a/sql/sql_yacc.yy
+++ b/sql/sql_yacc.yy
@@ -7555,6 +7555,7 @@ keyword:
 	| TRUNCATE_SYM		{}
 	| UNICODE_SYM		{}
         | XA_SYM                {}
+        | UPGRADE_SYM           {}
 	;
 
 /*