Addendum to “Anisotropic Dark Energy Stars”. Cristian R. Ghezzi 1,2 Abstract In a paper of Zubairi and Weber (Astron. Nachr. 335, 593, 2014), it was claimed that there are some inconsistencies with some of the terms of the TOV equation derived in my paper on “anisotropic dark en- ergy stars”, published in ApSS 333 437 (2011). I con- tacted the authors and reaffirm here the correctness of my results. 1 Errare humanum est, perseverare autem diabolicum. The paper mentioned in the abstract cited my pa- per “Anisotropic Dark Energy Stars” and claimed to make a “step by step” derivation of the Tolman- Oppenheimer-Volkof equations with cosmological con- stant (see also Ref. 2). This equation is well known in the literature, and is a particular case of the anisotropic model I studied and derived in my paper (Ref. 4). As the authors were not clear about which inconsistencies they found, I contacted them and obtained a kind re- sponse from the first author who told me: “In your final Lambda-TOV equation (on top of page 4), I could not get the correct units to work out for dP/dr”. So, it seems the confusion was probably due to a different system of units used in both papers, i.e., I used CGS units while Zubairi and Weber used the “natural sys- tem” commonly used in high energy physics. In fact checking their TOV equation I found that my results reduce to theirs as the anisotropy tends to zero, i.e. ΔP = 0. So, the results given in my paper are valid and Cristian R. Ghezzi Facultad de Ciencias Exactas y Naturales, Departamento de F´ ısica, Universidade Nacional de La Pampa, Santa Rosa, La Pampa, Argentina gluon00@yahoo.com of greater generality than theirs. Although the compat- ibility between the equations can be checked easily, I’ll clarify here the units. As I understand the confusion is in the paragraph: “or as function of the cosmological constant Λ = 8πGρ de /c 2 : d ˆ P dr =2 ΔP r + -(δc 2 + P ) ( m ′ G c 2 + 4πG c 4 Pr 3 - 1 3 Λr 3 ) r ( r - 2m ′ G c 2 - 1 3 Λr 3 ) .” The definition of the cosmological constant is Λ = 8πGρ de /c 2 . The units are  G  =1/(  ρ  sec 2 );  ρ de  =  ρ  , thus the units of Lambda are  Λ  = cm −2 . So the last term in the TOV eq., 1 3 Λr 3 , has units of length. On the left hand side the units are equal to  ρc 2  /cm, and agree with the right hand side units. This equation in natural units (G = c = 1) is: d ˆ P dr =2 ΔP r + -(δ + P ) ( m ′ +4πPr 3 - 1 3 Λr 3 ) r ( r - 2m ′ - 1 3 Λr 3 ) . This equation trivially reduce to the Zubairi’s equation for the case ΔP = 0 and δ = ǫ. However, I acknowledge there are some typos in my paper (errare humanum est) which do not change the final results or the main equation, but could be the source of the confusion. There it lacks a factor G in the left hand of equations 8, 9, and 10, of the Ref. (4). With this correction, the equation 15 reads: 1 2 ν ′ = 4πG(P + P r )r 3 /c 4 + mG/c 2 r(r - 2mG/c 2 ) . (1) The rest of the paper is free of typos (I hope: per- severare autem diabolicum), and the main equation is