diff --git a/dune/solvers/norms/h1seminorm.hh b/dune/solvers/norms/h1seminorm.hh
index aff87ec471352b6a9e9a762acd4778fbbcd21360..93152aaa3f7b219ea4b5f85e82655c70f1a91a81 100644
--- a/dune/solvers/norms/h1seminorm.hh
+++ b/dune/solvers/norms/h1seminorm.hh
@@ -25,7 +25,7 @@ public:
 
     //! Compute the norm of the difference of two vectors
     double diff(const VectorType& u1, const VectorType& u2) const
-	{
+    {
           assert(u1.size()==u2.size());
           assert(u1.size()==matrix_->N());
 
@@ -36,7 +36,7 @@ public:
 			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];
+      typename VectorType::block_type differ_i = u1[i] - u2[i];
 			for (; cIt!=cEndIt; ++cIt)
 				sum += differ_i * (u1[cIt.index()]-u2[cIt.index()]) * (*cIt);
         }
diff --git a/dune/solvers/norms/norm.hh b/dune/solvers/norms/norm.hh
index 8b0e6fc8b62a42ca8d0ff581ce59236a8c071680..f7555f800b4007c1b591b4231cc034f4718a79ca 100644
--- a/dune/solvers/norms/norm.hh
+++ b/dune/solvers/norms/norm.hh
@@ -18,7 +18,7 @@ class Norm {
         using field_type =  typename Dune::FieldTraits<VectorType>::field_type;
 
         /** \brief Destructor, doing nothing */
-        virtual ~Norm() {};
+        virtual ~Norm() {}
 
         //! Compute the norm of the given vector
         virtual field_type operator()(const VectorType& f) const = 0;
diff --git a/dune/solvers/norms/twonorm.hh b/dune/solvers/norms/twonorm.hh
index 65b41dadcb06a4fc036295c4f4ec70bb3780b0bb..09d99b7b592f420737c5d2abd5b77ccbd6f13c00 100644
--- a/dune/solvers/norms/twonorm.hh
+++ b/dune/solvers/norms/twonorm.hh
@@ -18,7 +18,7 @@ class TwoNorm : public Norm<VectorType>
     public:
 
         /** \brief Destructor, doing nothing */
-        virtual ~TwoNorm() {};
+        virtual ~TwoNorm() {}
 
         //! Compute the norm of the given vector
         virtual double operator()(const VectorType& f) const