diff --git a/dune/solvers/norms/h1seminorm.hh b/dune/solvers/norms/h1seminorm.hh
index 531ecdf03da74e02a5a134bd2c1652ecfd3ca849..449dd1f38fb5c2add402021d7ea2ed5b652449e9 100644
--- a/dune/solvers/norms/h1seminorm.hh
+++ b/dune/solvers/norms/h1seminorm.hh
@@ -14,21 +14,21 @@ class H1SemiNorm : public Norm<VectorType>
 {
 public:
     H1SemiNorm() : matrix_(NULL) {}
-    
-    H1SemiNorm(const Dune::BCRSMatrix<Dune::FieldMatrix<double,1,1> >& matrix) 
+
+    H1SemiNorm(const Dune::BCRSMatrix<Dune::FieldMatrix<double,1,1> >& matrix)
         : matrix_(&matrix)
     {}
 
     //! Compute the norm of the difference of two vectors
-    double diff(const VectorType& u1, const VectorType& u2) const 
+    double diff(const VectorType& u1, const VectorType& u2) const
 	{
 		double sum = 0;
-		
-		for (size_t i=0; i<matrix_->N(); i++) 
+
+		for (size_t i=0; i<matrix_->N(); i++)
 		{
 			typename Dune::BCRSMatrix<Dune::FieldMatrix<double,1,1> >::row_type::const_iterator cIt    = (*matrix_)[i].begin();
 			typename Dune::BCRSMatrix<Dune::FieldMatrix<double,1,1> >::row_type::const_iterator cEndIt = (*matrix_)[i].end();
-			
+
                         typename VectorType::block_type differ_i = u1[i] - u2[i];
 			for (; cIt!=cEndIt; ++cIt)
 				sum += differ_i * (u1[cIt.index()]-u2[cIt.index()]) * (*cIt);
@@ -36,7 +36,7 @@ public:
 
         return std::sqrt(sum);
     }
-    
+
     //! Compute the norm of the given vector
     double operator()(const VectorType& u) const
     {
@@ -45,22 +45,22 @@ public:
         // we compute sqrt{uAu^t}.  We have implemented this by hand because the matrix is
         // always scalar but the vectors may not be
         double sum = 0;
-        
+
         for (size_t i=0; i<matrix_->N(); i++) {
-            
+
             typename Dune::BCRSMatrix<Dune::FieldMatrix<double,1,1> >::row_type::const_iterator cIt    = (*matrix_)[i].begin();
             typename Dune::BCRSMatrix<Dune::FieldMatrix<double,1,1> >::row_type::const_iterator cEndIt = (*matrix_)[i].end();
-            
+
             for (; cIt!=cEndIt; ++cIt)
                 sum += u[i]*u[cIt.index()] * (*cIt);
-            
+
         }
-        
+
         return std::sqrt(sum);
     }
-    
+
     const Dune::BCRSMatrix<Dune::FieldMatrix<double,1,1> >* matrix_;
-    
+
 };
 
 #endif