Stumped on this

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Siopses

I was just playing around with this test I made and I'm clueless to why the following error message pops up:
"Case without Select." The code is properly indented
for those who are adamant 'bout it.

;Event List 
KEY_DOWN=$101 ;A key was pressed down-needs the keys scancode for EventData().
KEY_UP=$102 ;A key has been released on the keyboard-needs the keys scancode for EventData().
KEY_USED=$103 ;A key has been typed-needs keys ascii value.
MOUSE_BUTTON_DOWN=$201 ;self explanatory, needs one of the following values(1=left,2=middle,3=right).
MOUSE_OVER_CANVAS=$203 ;self explanatory, you need to use EventX() and EventY() along with the canvas handle.
GADGET_USED=$401 ;self explanatory, you need to be specific to what kind of gadget it is, and what the gadgets handle is as well.
MENU_SELECTED=$1001 ;something has been selected from a menu, needs the menu identifier
X_HIT=$803 ;The X was hit
APPLICATION_HALTED=$2001 ;Self explanatory, means that the program was suspended
APPLICATION_RESUMED=$2002 ;Self explanatory, means that the program was resumed
;Banks
guibank=CreateBank(12)
PokeInt guibank,0,CreateWindow("UNTILTLED TEST",300,300,400,400,main,15)
PokeInt guibank,4,CreateButton("1",35,35,35,35,main,1)
PokeInt guibank,8,CreateButton("2",70,70,70,70,main,1)
Repeat
	Buttonz()
Until WaitEvent()=$803
End
Function Buttonz()
	PeekInt(guibank,0)
	uno=PeekInt(guibank,4)
	dos=PeekInt(guibank,8)
		Select WaitEvent()
			Case $401
				If EventSource()=uno Then
					Notify("UNO")
						Case $401
							If EventSource()=dos Then
								Notify("DOS")
							EndIf
				EndIf
		End Select
End Function

Thanks,
Siopses