The invention relates to storage-stable prothioconazole-containing formulations having a particularly low content of 2-(1-chlorocyclopropyl)-1-(2-chlorophenyl)-3-( H-1,2,4-triazol-1-yl)propan-2-ol based on organic vinyl compounds, to a process for their preparation, to a method for controlling phytopathogenic fungi in crop protection and to their use as crop protection agents.