diff --git a/docs/user-guide/gravitational-harmonics/index.rst b/docs/user-guide/gravitational-harmonics/index.rst
index 8c0d21668..9dc191671 100644
--- a/docs/user-guide/gravitational-harmonics/index.rst
+++ b/docs/user-guide/gravitational-harmonics/index.rst
@@ -5,7 +5,7 @@ Gravitational Harmonics
 Here, we show how to use Swiftest's Gravitational Harmonics capabilities. This is based on ``spherical_harmonics_cb`` 
 in ``swiftest/examples``. Swiftest uses `SHTOOLS <https://shtools.github.io/SHTOOLS/>`__ to compute the gravitational 
 harmonics coefficients for a given body and calculate it's associated acceleration kick. The conventions and formulae used 
-to calculate the additional kick are described `here <https://sseh.uchicago.edu/doc/Weiczorek_2015.pdf>`__. The gravitational
+are described `here <https://sseh.uchicago.edu/doc/Weiczorek_2015.pdf>`__. The gravitational
 potential is given by the following equation:
 
 .. math::