Studying the semileptonic decays of charmed particles is prominent in testing standard model particle physics. Motivated by recent experimental progress weak charm baryon sector, we study form factors $\Lambda_c \to \Lambda \ell^+ \nu$ transition on two flavor lattices. We compute two- and three-point functions, extract dimensionless projected correlators, combine them to Weinberg factors. In zero transferred momentum limit $f_1$, $f_2$ $g_1$ are found be agreement with other models, furthermore $f_3$ $g_3$ comparable determinations. The $g_2$ factor, hand, mildly larger. also evaluate helicity factors, which consistent previous lattice studies.