diff --git a/common/fvector.hh b/common/fvector.hh
index 2bf1a0b84ef65f15df95143e9a0d383d335d0b00..ae0a28eca6980b00cc2fca3dd1771ab678de625d 100644
--- a/common/fvector.hh
+++ b/common/fvector.hh
@@ -601,7 +601,7 @@ namespace Dune {
 #ifndef DUNE_EXPRESSIONTEMPLATES
     //===== Euclidean scalar product
 
-    //! scalar product
+    //! scalar product (x^T y)
     K operator* (const FieldVector& y) const
     {
       K result = 0;
@@ -610,7 +610,6 @@ namespace Dune {
       return result;
     }
 
-
     //===== norms
 
     //! one norm (sum over absolute values of entries)
@@ -946,7 +945,7 @@ namespace Dune {
       return *this;
     }
 
-    //! scalar product
+    //! scalar product (x^T y)
     inline K operator* ( const K & k ) const
     {
       return p * k;
@@ -990,7 +989,6 @@ namespace Dune {
       return fvmeta_abs_real(p);
     }
 
-
     //===== sizes
 
     //! number of blocks in the vector (are of size 1 here)