The invention relates to storage-stable formulations containing prothioconazole, with a particularly low 2-(1-chlorocyclopropyl)-1-(2-chlorophenyl)-3-(1H-1,2,4-triazol-1-yl)propan-2-ol content, on the basis of organic vinyl compounds, a method for producing same, a method for controlling phytopathogenic fungi to protect crops, and the use of same as a crop protection agent.