I'm working with a document class that has already set the left margin to 1.5in and right to 1in. I want to change both margins to 1in. I don't know how to alter the document class because I literally don't know where the .cls file is; it doesn't show up in finder (I remember having to do some kind of magic to get it to work when I first downloaded it). When I try \usepackage[margin=1in]{geometry} in my document, I get the error "the package geometry has already been loaded with options...". I noticed that I'm able to alter both margins simultaneously with


but obviously I only want to alter the left margin.

  • What is the name of the class?
    – Bernard
    May 2, 2017 at 22:57
  • Its something someone at my school wrote to format the dissertation to conform to the requirements set by the adminstrators May 2, 2017 at 23:03

1 Answer 1


Use the geometry package: much preferable.



  • I still get "the package geometry has ben loaded with options [] There has now been an attempt to load it with options [left=1in] Adding the global options:, left=1in to your \documentclass declaration may fix this." May 2, 2017 at 23:02
  • 1
    If geometry is loaded by the class, you may type in the preamble: \geometry{hmargin=1in}.
    – Bernard
    May 2, 2017 at 23:16

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