The paper published by W. Wang, B.P. Lin, Y. Cao, Y. Sun, X.Q. Zhang, H. Yang, H. Sun, entitled: "High-performance GdxSr1-xNiO3 porous nanofibers prepared by electrospinning for symmetric and asymmetric supercapacitors" in J. Phys. Chem. Solid. 140 (2020) 109361, DOI: 10.1016/j.jpcs.2020.109361 (Wang et al., 2020) [1], represents an interesting porous nanofiber processing and characterization work. However, mistakes in the captions for both Fig. 4 and Fig. 5 have been found. Some suggested modifications on the published paper are provided in the following comments to correct the mistakes.