The present study aims to test if Turkish L2 users of English judge the grammaticality of generic/habitual real conditionals in Turkish differently compared to Turkish monolinguals. Bassetti and Cook (2011) and Bialystok (2001) claim that one of the outcomes of being a bilingual is an increase in metalinguistic awareness. Accordingly, this study investigates if Turkish L2 users have an increased metalinguistic awareness. 20 grammaticality judgment tasks are analysed in data analysis. The participants are university-graduate 15 Turkish monolinguals and 15 Turkish L2 users of English. The responses are evaluated via both descriptive statistics and also SPSS. The analysis indicates that the difference between the monolinguals and L2 users in the judgement of Turkish conditionals is a statistically significant one. This result suggests that learning an L2 has an effect on the L1 of L2 users. This implies that L2 users are a distinctive group of people with regard to their language knowledge.