diff --git a/test/freeflow/navierstokes/angeli/main.cc b/test/freeflow/navierstokes/angeli/main.cc
index d2676cfab7d07a6f51015a3edafdd9d67d9731f1..b1efc8762d54be4b35a03e010b015979faffccc0 100644
--- a/test/freeflow/navierstokes/angeli/main.cc
+++ b/test/freeflow/navierstokes/angeli/main.cc
@@ -20,6 +20,7 @@
  * \file
  *
  * \brief Test for the instationary staggered grid Navier-Stokes model with analytical solution (Angeli et al., 2017)
+ * The unsteady, 2D, incompressible Navier-Stokes equations for a zero source and a Newtonian flow is solved and compared to an analytical solution (sums/products of trigonometric functions). The velocities and pressures decay exponentially. The Dirichlet boundary conditions are time-dependent and consistent with the analytical solution.
  */
 #include <config.h>