Problema com query ( mysql)

Dim Query As String
Dim connection As New MySqlConnection(connStr)

connection.Open()

 Query = "UPDATE test SET play ='" + "0" + "',"

 Query = Query + " front = '" + "0" + "',"
 Query = Query + " back = '" + "0" + "',"
 Query = Query + " value = '" + "50" + "',"
 Query = Query + " item = '" + "0" + "',"
 Query = Query + " WHERE dbid = '2' "

 Dim cmd As MySqlCommand = New MySqlCommand(Query, connection)

 Dim i As Integer = cmd.ExecuteNonQuery()
 If (i > 0) Then
 Timer1.Enabled = True
 Else
 Label4.Text = "Não foi possível conectar-se com o aplicativo móvel."
 End If
 connection.Close()

O visual basic informa que : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE dbid = '2'' at line 1, como consertar essa síntaxe?