Comment on "Retention of the tetragonal to orthorhombic structural transition in F-substituted SmFeAsO: a new phase diagram for SmFeAs(O(1-x)F((x))". 
A Comment on the Letter by A. Martinelli, A. Palenzona, M. Tropeano, M. Putti, C. Ferdeghini, G. Profeta, and E. Emerich, Phys.  Rev. Lett.  106, 227001 (2011).  The authors of the Letter offer a Reply.