Previous studies observed a robust effect of grapheme-phoneme correspondences (GPCs) when learners are exposed to orthographic input while learning novel words. Specifically, if the novel words share the same GPC mapping with learners’ native language, then this Congruency effect helps learning. Likewise, if the GPC is in a one-to-one mapping relation, this effect of Systematicity improves learning too. However, no studies have looked at the interaction of Congruency and Systematicity on word learning or explored both consonant and vowel stimuli. Here, we show no significant orthographic effect when the consonantal GPC mappings were manipulated, particularly because performance was close to the ceiling. And so, while congruent and systematic GPC mappings could facilitate learning, they were not as robust as the literature had suggested. Nevertheless, the effect of Systematicity was significant in the Vowel Sets, likely due to more exposure to the stimuli.