The present invention relates to fungicidal plant protection formulations comprising: a) dimethomorph as active substance A and b) at least one active substance B from the group of the dithiocarbamates, where the plant protection formulation is formulated as an oil suspension concentrate of the active substances A and B in a liquid organic diluent C which is selected among hydrocarbons, vegetable oils, fatty acid esters and their mixtures, and where the oil suspension concentrate furthermore comprises at least one surface-active substance D.