Conditional deviation not working - Assembly

Question

I went to write a little program in Assembly with the compiler NASM in Xubuntu, there is the code:

    section .data        ;1
        msg db "Olá"     ;2
        n1 db 10         ;3
        n2 db 1          ;4
        len equ $-msg    ;5
                         ;6
    section .text        ;7
        global _start    ;8
        _start:          ;9
            mov rax, n1  ;10
            cmp rax, n2  ;11
            ja end       ;12
            mov rdx, len ;13
            mov rcx, msg ;14
            mov rbx, 1   ;15
            mov rax, 4   ;16
            int 80h      ;17
         end:            ;18
            mov rbx, 0   ;19
            mov rax, 1   ;20
            int 80h      ;21

Theoretically, when it arrived on line 12 it was for the program to jump to the label "end", since a deviation is being made but for some reason the program continues the normal execution.