  Recently the CCFR Collaboration reported the measurement of the
Gross--Llewellyn Smith sum rule %at $Q^2=3\; \mr{GeV}^2$:
$\int^{1}_{0}\mr{d}F_{3}^{\nu p+\bare{\nu}p}(x,Q^2=3\;\mr{GeV}^2)= 2.50\pm
0.018(\mr{stat})$. Subsequently Kataev and Sidorov analyzed the
$Q^2$--dependence of this sum rule and pointed out a discrepancy between the
results obtained via integration of the NLO fits to $xF_{3}(x,Q^2)$ and the
purely perturbative prediction. We suggest an explanation of this disagreement
and show that the result of the CCFR measurement of the GLS sum rule integral
can be determined from the knowledge of the value of $\Lambda_{\bbare{MS}}$
only.
