fix typo in doc

1 files changed, 1 insertions, 1 deletions

diff --git a/Docs/source/running_cpp/parameters.rst b/Docs/source/running_cpp/parameters.rst
index 9beb234ae..2d8d7d982 100644
--- a/Docs/source/running_cpp/parameters.rst
+++ b/Docs/source/running_cpp/parameters.rst
@@ -769,7 +769,7 @@ Diagnostics and output
     ``Bx`` ``By`` ``Bz`` ``jx`` ``jy`` ``jz`` ``part_per_cell`` ``rho``
     ``F`` ``part_per_grid`` ``part_per_proc`` ``divE`` ``divB``.
     Default is
-    ``warpx_fields_to_plot = Ex Ey Ez Bx By Bz jx jy jz part_per_cell``.
+    ``warpx.fields_to_plot = Ex Ey Ez Bx By Bz jx jy jz part_per_cell``.
 
 * ``slice.dom_lo`` and ``slice.dom_hi`` (`2 floats in 2D`, `3 floats in 3D`; in meters similar to the units of the simulation box.)
     The extent of the slice are defined by the co-ordinates of the lower corner (``slice.dom_lo``) and upper corner (``slice.dom_hi``). The slice could be 1D, 2D, or 3D, aligned with the co-ordinate axes and the first axis of the coordinates is x. For example: if for a 3D simulation, an x-z slice is to be extracted at y = 0.0, then the y-value of slice.dom_lo and slice.dom_hi must be equal to 0.0