The present invention relates to azolylmethyloxiranes of the general formula I in which A is phenyl which is substituted by an F and another substituent selected from the group consisting of Cl, C1-C4-alkyl, C1-C4-haloalkyl and C1-C4-alkoxy, B is unsubstituted pyridyl, thienyl, thiazolyl, oxazolyl or furyl or is phenyl which is substituted by one to three of the following substituents: halogen, NO2, amino, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-haloalkyl, C1-C4-haloalkoxy, C1-C4-alkylamino, C1-C4-dialkylamino, thio or C1-C4-alkylthio, with the proviso that B is not o-methylphenyl if A is 2-chloro-4-fluorophenyl, and to the plant-compatible acid addition salts or metal salts thereof, to the use of the compounds of the formula I for controlling phytopathogenic fungi and to compositions comprising these compounds.