diff --git a/runtime/syntax/mysql.vim b/runtime/syntax/mysql.vim
index 68b8e9d..aa123b7 100644
--- a/runtime/syntax/mysql.vim
+++ b/runtime/syntax/mysql.vim
@@ -249,6 +249,7 @@
 syn region mysqlFunction	 start="subdate(" end=")" contains=ALL
 syn region mysqlFunction	 start="substring(" end=")" contains=ALL
 syn region mysqlFunction	 start="substring_index(" end=")" contains=ALL
+syn region mysqlFunction	 start="subtime(" end=")" contains=ALL
 syn region mysqlFunction	 start="sum(" end=")" contains=ALL
 syn region mysqlFunction	 start="sysdate(" end=")" contains=ALL
 syn region mysqlFunction	 start="system_user(" end=")" contains=ALL