Methanol and water masers indicate young stellar objects .
They often exhibit flares , and a fraction shows periodic activity .
Several mechanisms might explain this behavior but the lack of concurrent infrared ( IR ) data complicates to identify the cause .
Recently , 6.7 GHz methanol maser flares were observed , triggered by accretion bursts of high-mass YSOs which confirmed the IR-pumping of these masers .
This suggests that regular IR changes might lead to maser periodicity .
Hence , we scrutinized space-based IR imaging of YSOs associated with periodic methanol masers .
We succeeded to extract the IR light curve from NEOWISE data for the intermediate mass YSO G107.298+5.639 .
Thus , for the first time a relationship between the maser and IR variability could be established .
While the IR light curve shows the same period of \sim 34.6 days as the masers , its shape is distinct from that of the maser flares .
Possible reasons for the IR periodicity are discussed .