diff --git a/dune/gfe/unitvector.hh b/dune/gfe/unitvector.hh
index a0f71d813f2cd482bae662b22b7997ce55ee66a4..a8cd3287a8b7e70271158fdaa45075a7e41542f1 100644
--- a/dune/gfe/unitvector.hh
+++ b/dune/gfe/unitvector.hh
@@ -224,7 +224,7 @@ public:
     }
     
     
-    /** \brief Compute the mixed second derivate \partial d^3 / \partial da db^2
+    /** \brief Compute the mixed third derivative \partial d^3 / \partial da db^2
 
     Unlike the distance itself the squared distance is differentiable at zero
      */