Here are 6 verbs that have 2 past tenses which are both accepted as correct in English.

learned/learnt
burned/burnt
smelled/smelt
spelled/spelt
spilled/spilt
spoiled/spoilt

Does it matter if you use one word over another? It doesn’t matter as they are both correct; however, the ‘ed’ form is used in American English and the ‘t’ form is used more in British English.