The present invention relates to a process for preparing an aqueous suspension of an organic pesticide compound, which has a solubility in water of not more than 2 g/l at 20°C and a melting point of not more than 110°C and which is capable of forming at least one crystalline modification, wherein the organic pesticide compound is present in the form of essentially crystalline particles, which process comprises: a) providing an aqueous emulsion of the organic pesticide compound, wherein the organic pesticide compound is present in the form droplets of an amorphous form of the organic pesticide compound, and b) addition of an aqueous suspension of said organic pesticide compound, wherein the organic pesticide compound is present in the form of essentially crystalline particles, wherein the addition in step b) is performed at a temperature below the melting temperature of the crystalline form of the organic pesticide compound.
