diff --git a/dumux/freeflow/nonisothermal/model.hh b/dumux/freeflow/nonisothermal/model.hh
index aa8a95657768ae22d2557fa72ba8b55731373832..89309524bd556658ec9894de384617f84c385d90 100644
--- a/dumux/freeflow/nonisothermal/model.hh
+++ b/dumux/freeflow/nonisothermal/model.hh
@@ -24,7 +24,7 @@
  *
  * In addition to the momentum and mass/mole balance equations, this model also solves the <B> energy balance equation </B>:
  * \f[
- *    \frac{\partial (\varrho  v)}{\partial t}
+ *    \frac{\partial (\varrho  u)}{\partial t}
  *    + \nabla \cdot \left( \varrho h {\boldsymbol{v}}
  *    - \lambda_\text{eff} \textbf{grad}\, T \right) - q_T = 0
  * \f]