  Let $C$ be smooth irreducible projective curve of genus $g \ge 2$. Let
$\mathcal{M}_C(n, \delta)$ be moduli space of stable vector bundles on $C$ of
rank $n$ and fixed determinant $\delta$ of degree $d$. Then the locus of wobbly
bundles are known to be closed in $\mathcal{M}_C(n, \delta)$. Drinfeld has
conjectured that the wobbly locus is pure of co-dimension one, i.e., they form
a divisor in $\mathcal{M}_C(n, \delta)$. In this article, we will give a prove
of the conjecture.
