  We suggest a simple relation between the quark and the lepton mixing within
the framework of type-I seesaw mechanism. We show that within our ansatz the
empirical King-Mohapatra-Smirnov relation, which suggests a connection between
the CKM and PMNS mixing where $|V^\text{PMNS}_{13}|\approx
\frac{1}{\sqrt{2}}\sin(\theta_C) $, can be derived. This is possible within a
restricted region of the Dirac and Majorana mass parameters.
