diff --git a/specreduce/extract.py b/specreduce/extract.py
index 77dba4d..fa33425 100644
--- a/specreduce/extract.py
+++ b/specreduce/extract.py
@@ -148,12 +148,12 @@ class BoxcarExtract(SpecreduceOperation):
     crossdisp_axis
         cross-dispersion axis
     mask_treatment
-        The method for handling masked or non-finite data. Choice of `filter`,
-        `omit`, or `zero-fill`. If `filter` is chosen, the mask is ignored
+        The method for handling masked or non-finite data. Choice of ``filter``,
+        ``omit``, or ``zero-fill``. If `filter` is chosen, the mask is ignored
         and the non-finite data will passed to the extraction as is. If `omit`
         is chosen, columns along disp_axis with any masked or non-finite data
         values will be fully masked (i.e, 2D mask is collapsed to 1D and applied).
-        If `zero-fill` is chosen, masked and non-finite data will be replaced
+        If ``zero-fill`` is chosen, masked and non-finite data will be replaced
         with 0.0 in the input image, and the mask will then be dropped.
         For all three options, the input mask (optional on input NDData object)
         will be combined with a mask generated from any non-finite values in the