We computed the proton self-diffusion coefficient at 800 K for DSG with one added proton and compared it with the value previously computed for SSG . Protons were tracked based on our implementation of the center of excess charge tracking algorithm. We estimated a diffusion coefficient of 3.3 × 10 -8 ± 1.5 × 10 -8 m 2 /s, which is statistically indistinguishable from the value computed for SSG at the same conditions . The agreement between diffusivities for DSG and SSG indicates that structural differences in these materials do not influence proton diffusion, even at high temperatures, where the magnitude of the thermal fluctuations is larger.