Grammatical error is one of the factors students face in mastering speaking skill. This error usually occurs during speaking performance, even though it cannot be denied that grammar plays a crucial role in helping students become competent speakers. This study focuses on analyzing the grammatical errors and to provide description of errors on speaking activities using simple present tense, in this case is telling habitual actions. The research design is descriptive qualitative study with analyzing errors made by seventh semester pre-service students in English Education Department of UIN Walisongo Semarang. The data was conducted from oral test which consisted of questions using tenses of simple present tense. The findings show that there are four categories of errors made by students. Those are: a) omission with 37,5% of errors; b) addition with 32,9% of errors; c) misformation with 21,6% of errors; and d) misordering with 7,9% or errors. Based on the findings, it can be concluded that students mostly made errors on omission with total errors 33 out of 88 errors.