In his recent article in Ethnic and Racial Studies, entitled 'Curbing Kurdish ethno-nationalism in Turkey', Sarigil (2010) tests two rival hypotheses regarding Kurdish ethno-nationalism in Turkey and, using data from the World Values Survey (WVS), finds that socio-economic status (levels of income and education) better explains the individual roots of Kurdish ethno-nationalism in Turkey than does religiousness. In this paper, I offer both a methodological critique of Sarigil's research and a replication of his model with a more appropriate sample. I first argue that Sarigil's research design lacks internal validity because it studies Kurdish nationalism within a sample that predominantly consists of Turks, which invalidates his findings. I then replicate and expand Sarigil's model within a specific sample of Kurdish-speaking people in Turkey. The results show dramatic changes. Religiosity and political satisfaction seem to be better predictors of support for Kurdish ethno-nationalism in Turkey than do socio-economic factors.