  Thermodynamic geometry analysis of interesting Letter [Phys. Rev. Lett. 115,
111302 (2015)] for charged AdS black holes, which is based on studying the
Ruppeiner invariant behavior is not correct and the authors made a mistake in
calculating this quantity. In the present Letter, we address the correct
Ruppeiner scalar curvature and reveal the correct possible microscopic
properties of 4-dimensional charged AdS black holes arise from it. Some of
these properties have not been discussed in pointed out Letter.
