  A path in a vertex-colored graph is called {\it conflict-free} if there is a
color used on exactly one of its vertices. A vertex-colored graph is said to be
{\it conflict-free vertex-connected} if any two vertices of the graph are
connected by a conflict-free path. The {\it conflict-free vertex-connection
number}, denoted by $vcfc(G)$, is defined as the smallest number of colors
required to make $G$ conflict-free vertex-connected. Li et al. conjectured that
for a connected graph $G$ of order $n$, $vcfc(G)\leq vcfc(P_n)$. We confirm
that the conjecture is true and pose a a relevant conjecture concerning the
conflict-free connection number introduced by Czap et al..
