Comment on: “Traveling wave solutions for fifth-order KdV type equations with time-dependent coefficients” [Commun Nonlinear Sci Numer Simulat 19 (2014) 404-408]

In this paper, we demonstrate that previously reported traveling wave solutions for the fifth order KdV type equations with time dependent coefficients (Triki and Wazwaz, 2014) are incorrect. We present the corrected traveling wave solutions for fifth order KdV type equations using sine-cosine method. In addition, we provide traveling wave solutions for the Kawahara equation and Kaup-Kupershmidt equation as an application.