diff --git a/doc/computation.rst b/doc/computation.rst
index 2fc0f2ff..99f6d336 100644
--- a/doc/computation.rst
+++ b/doc/computation.rst
@@ -291,7 +291,7 @@ is attached; the possible attachment object types are :at:`joint`, :at:`tendon`,
    :ref:`adhesion<actuator-adhesion>` actuator documentation.
 
    If a :at:`site` transmission target is defined with the optional :at:`refsite` attribute, forces and torques are
-   applied in the frame of the reference site rather than the the site's own frame. If a reference site is defined then
+   applied in the frame of the reference site rather than the site's own frame. If a reference site is defined then
    the length of the actuator is nonzero and corresponds to the pose difference of the two sites. This length can then
    be controlled with a :el:`position` actuator, enabling Cartesian end-effector control. See the :at:`refsite`
    documentation in :ref:`actuator<actuator-general>` reference for more details.