International STEM students, taking degree courses taught in German language, often not fully meet the special language requirements of their subject during enrollment and are thus facing a challenging situation: STEM teaching requires German Technical language understanding, while German language classes mostly only cover everyday communication and thus insufficiently prepares students for scientific reading and writing. Moreover, time for language classes is usually very limited and offers only few credit points, within STEM curricula. Thus, the following article offers several suggestions for the enhancement of technical language in German language teaching. This is based on an approach encompassing the instrumental character of German as language of instruction and on student centered learning as a didactic principle.