x86 - Invalid effective address (assembly) -

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the following code: 

mov edx,dword[ecx+(5*ebx)]

gives me error of "invalid effective address".
far know, ok take content of (register1+ register2 multiplied constant). why getting error here?
full code: 

section .text      align 16      global main  main:      push    ebp     mov ebp, esp         pushad                mov ebx, 1     mov ecx, 2     mov edx,dword[ecx+(5*ebx)]      popad           ; restore registers     mov esp, ebp    ; function exit code     pop ebp     ret


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