  We have searched for optical variability in the host galaxy of the radio
variable source which is possibly associated with fast radio burst (FRB)
150418. We compare images of the galaxy taken 1 day after the burst using
Subaru/Suprime-Cam with images taken $\sim$ 1 year after the burst using
Gemini-South/GMOS. No optical variability is found between the two epochs with
a limiting absolute magnitude $\gtrsim -19$ (AB). This limit applies to optical
variability of the putative active galactic nucleus in the galaxy on a
timescale of $\sim$ 1 year, and also to the luminosity of an optical
counterpart of FRB~150418 one day after the burst should it have occurred in
this galaxy.
