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We show in this note that in the forcing extension by$Add(\omega,\beth_{\omega})$, the following Ramsey property holds: for any$r\in \omega$ and any $f: \mathbb{R}\to r$, there exists an infinite $X\subset\mathbb{R}$ such that $X+X$ is monochromatic under $f$. We also show the Ramseystatement above is true in $\mathrm{ZFC}$ when $r=2$. This answers twoquestions by Komj\'ath, Leader, Russell, Shelah, Soukup and Vidny\'anszky.

Monochromatic Sumset Without the use of large cardinals