diff --git a/doc/doxygen/groups/material.md b/doc/doxygen/groups/material.md
index 8ceea0f344f658d2529b79e4edc1d200e2f907fa..4ef218722a8f13a93c65f3160c6d0b433c560e77 100644
--- a/doc/doxygen/groups/material.md
+++ b/doc/doxygen/groups/material.md
@@ -91,7 +91,7 @@ bottom friction and on the other hand the bedload transport rate.
 @ingroup Fluidmatrixinteractions
 
 @defgroup DispersionTensors Dispersion Tensors
-@brief Dispersion Tensors for calculating the dispersion in all spatial dimensions
+@brief Dispersion tensor models characterising mechanical dispersion in porous media
 @details Dispersion is caused by particles traveling with different velocity through the porous medium. A particle in the middle of a pore has a higher velociy than a particle close to the grain. Additionaly, due to the tortuosity of the porous medium particles have to take different paths through it. This leads to an effect, which is like an enhanced diffusion, equalizing concentration gradients. 
 @ingroup Fluidmatrixinteractions