Let $X$ be a Calabi-Yau variety over $K$, and let $\mathscr{X}$ be a good minimal dlt-model for $X$ over $R$. Assume that the special fiber $\mathscr{X}_{k}$ is reduced. Let $C$ be a one-dimensional stratum of $\mathscr{X}_{k}$. Then, on an open neighbourhood of $C$, the scheme $\mathscr{X}$ is regular and $\mathscr{X}_{k}$ is a divisor with strict normal crossings.