Kurdish-Kurmanji (or Northern Kurdish) belongs to the Iranian branch of the Indo-European language family. This study is dedicated to a deeper understanding of a specific grammatical feature typical of Kurmanji: the ergative structure. Based on the example of this core structure, and with empirical evidence from the Kurmanji dialect of Muş in Turkey, I will discuss the issues of variation and change in Kurmanji, more precisely the ongoing shift from ergative to nominative-accusative structures. The causes for such a fundamental shift, however, are not easy to define. The close historical vicinity to Turkish and Armenian might be a trigger for the shift; another trigger is language-internal (diachronic) change. In sum, the investigated variation sheds light on a fascinating grammatical change in a language that is also sociopolitically in a situation of constant change, movement, and upheaval.