This study proposes to explore the key factors influencing the university students' intention to use mobile learning system in Indonesia. For this purpose, four direct factors incorporated into the Unified Theory of Acceptance and Use Technology (UTAUT): performance expectancy, effort expectancy, external influence, quality of services and another additional factor -- individual innovativeness were examined. The study is based on an online survey being conducted among 284 respondents. Exploratory factor analysis is performed at the beginning of the analysis to extract six factors (5 independents, one dependent) using IBM SPSS then tested confirmative factor analysis employed structural equation modeling. All five investigated factors (independent) are significantly influencing the intention of the student to use mobile learning (dependent). The result is also indicated that the UTAUT obtained two extra factors that are personal innovativeness and prior mobile social media experiences as a catalyst.