diff --git a/dune/tectonic/localfriction.hh b/dune/tectonic/localfriction.hh
index 5edabfca11b22d25d913ef060f83a5021f56ac2f..2320302a47daf991724ad9bf8eba36554d2b5897 100644
--- a/dune/tectonic/localfriction.hh
+++ b/dune/tectonic/localfriction.hh
@@ -46,19 +46,19 @@ template <int dimension> class LocalFriction {
 
   /** Formula for the derivative:
 
-    \f{align*}{
+      \f{align*}{
       \frac {d^2}{dz^2} H(|z|)
       &= \frac d{dz} \left( H'(|z|) \otimes \frac z{|z|} \right)\\
       &= H''(|z|) \frac z{|z|} \otimes \frac z{|z|}
       + H'(|z|) \left( \frac {|z| \operatorname{id} - z \otimes z/|z|}{|z|^2}
-    \right)\\
+     \right)\\
       &= \frac {H''(|z|)}{|z|^2} z \otimes z
       + \frac {H'(|z|)}{|z|} \operatorname{id}
       - \frac {H'(|z|)}{|z|^3} z \otimes z\\
       &= \left( \frac {H''(|z|)}{|z|^2} - \frac {H'(|z|)}{|z|^3} \right) z
-    \otimes z
+     \otimes z
       + \frac {H'(|z|)}{|z|} \operatorname{id}
-    \f}
+      \f}
   */
   void addHessian(VectorType const &x, MatrixType &A) const {
     double const xnorm2 = x.two_norm2();