diff --git a/pygmt/src/plot.py b/pygmt/src/plot.py
index a567f3cde9a..a661d3efd3b 100644
--- a/pygmt/src/plot.py
+++ b/pygmt/src/plot.py
@@ -30,7 +30,6 @@
     I="intensity",
     L="close",
     N="no_clip",
-    M="fill_between",
     S="style",
     W="pen",
     Z="zvalue",
@@ -180,10 +179,6 @@ def plot(  # noqa: PLR0912, PLR0913
     $fill
         *fill* can be a 1-D array, but it is only valid if using ``x``/``y``
         and ``cmap=True`` is also required.
-    fill_between : str
-        [**c**\|\ **s**][**+l**\ *seclabel*][**+g**\ *fill*][**p**\ *pen*]
-        [**+r**\ *pen*][**+y**\ [*level*]].
-        Fill the middle area between two curves :math:`y_0(x)` and :math:`y_1(x)`.
     intensity : float, bool, or 1-D array
         Provide an *intensity* value (nominally in the -1 to +1 range) to
         modulate the fill color by simulating illumination. If using