  Light first generation leptoquarks are being hunted for in HERA and at FNAL
and there are various proposals for further searches in future machines. Such
leptoquarks are however problematic from a theoretical point of view: Low
energy precision measurements imply strong constraints on the couplings of the
leptoquarks, and up till now the fulfilment of these constraints seemed
extremely unnatural. Here we show that horizontal symmetries, which are very
conventional and widely used in the literature for completely different
purposes, can suppress the unwanted couplings. Therefore light first generation
leptoquarks can be natural.
