diff --git a/src/OpenMesh/Apps/QtViewer/MeshViewerWidgetT_impl.hh b/src/OpenMesh/Apps/QtViewer/MeshViewerWidgetT_impl.hh
index 9dda329b..fb627d1f 100644
--- a/src/OpenMesh/Apps/QtViewer/MeshViewerWidgetT_impl.hh
+++ b/src/OpenMesh/Apps/QtViewer/MeshViewerWidgetT_impl.hh
@@ -145,7 +145,7 @@ MeshViewerWidgetT<M>::open_mesh(const char* _filename, IO::Options _opt)
     
     
     // set center and radius
-    set_scene_pos( (bbMin+bbMax)*0.5, (bbMin-bbMax).norm()*0.5 );
+    set_scene_pos( (bbMin+bbMax)*0.5f, (bbMin-bbMax).norm()*0.5f );
     
     // for normal display
     normal_scale_ = (bbMax-bbMin).min()*0.05f;
diff --git a/src/OpenMesh/Core/Mesh/PolyMeshT_impl.hh b/src/OpenMesh/Core/Mesh/PolyMeshT_impl.hh
index 17f4927a..11d885c2 100644
--- a/src/OpenMesh/Core/Mesh/PolyMeshT_impl.hh
+++ b/src/OpenMesh/Core/Mesh/PolyMeshT_impl.hh
@@ -155,13 +155,13 @@ PolyMeshT<Kernel>::calc_face_normal_impl(FaceHandle, PointIsNot3DTag) const
 {
   // Dummy fallback implementation
   // Returns just an initialized all 0 normal
-  // This function is only used if we don't hate a matching implementation
+  // This function is only used if we don't have a matching implementation
   // for normal computation with the current vector type defined in the mesh traits
 
   assert(false);
 
   Normal normal;
-  vectorize(normal,Scalar(0.0));
+  vectorize(normal,Scalar(0));
   return normal;
 }
 
@@ -223,13 +223,13 @@ PolyMeshT<Kernel>::calc_face_normal_impl(const Point&, const Point&, const Point
 
   // Dummy fallback implementation
   // Returns just an initialized all 0 normal
-  // This function is only used if we don't hate a matching implementation
+  // This function is only used if we don't have a matching implementation
   // for normal computation with the current vector type defined in the mesh traits
 
   assert(false);
 
   Normal normal;
-  vectorize(normal,Scalar(0.0));
+  vectorize(normal,Scalar(0));
   return normal;
 }
 
@@ -241,7 +241,7 @@ PolyMeshT<Kernel>::
 calc_face_centroid(FaceHandle _fh) const
 {
   Point _pt;
-  vectorize(_pt, Scalar(0.0));
+  vectorize(_pt, Scalar(0));
   Scalar valence = 0.0;
   for (ConstFaceVertexIter cfv_it = this->cfv_iter(_fh); cfv_it.is_valid(); ++cfv_it, valence += 1.0)
   {
@@ -404,7 +404,7 @@ template <class Kernel>
 void PolyMeshT<Kernel>::
 calc_vertex_normal_fast(VertexHandle _vh, Normal& _n) const
 {
-  vectorize(_n,Scalar(0.0));
+  vectorize(_n, Scalar(0));
   for (ConstVertexFaceIter vf_it = this->cvf_iter(_vh); vf_it.is_valid(); ++vf_it)
     _n += this->normal(*vf_it);
 }
@@ -414,7 +414,7 @@ template <class Kernel>
 void PolyMeshT<Kernel>::
 calc_vertex_normal_correct(VertexHandle _vh, Normal& _n) const
 {
-  vectorize(_n, Scalar(0.0));
+  vectorize(_n, Scalar(0));
   ConstVertexIHalfedgeIter cvih_it = this->cvih_iter(_vh);
   if (! cvih_it.is_valid() )
   {//don't crash on isolated vertices
diff --git a/src/OpenMesh/Tools/Decimater/ModHausdorffT_impl.hh b/src/OpenMesh/Tools/Decimater/ModHausdorffT_impl.hh
index bde59f39..7985dc90 100644
--- a/src/OpenMesh/Tools/Decimater/ModHausdorffT_impl.hh
+++ b/src/OpenMesh/Tools/Decimater/ModHausdorffT_impl.hh
@@ -256,7 +256,7 @@ collapse_priority(const CollapseInfo& _ci)
   // undo simulation changes
   mesh_.set_point(_ci.v0, _ci.p0);
 
-  return ( ok ? Base::LEGAL_COLLAPSE : Base::ILLEGAL_COLLAPSE );
+  return ( ok ? static_cast<float>(Base::LEGAL_COLLAPSE) :  static_cast<float>(Base::ILLEGAL_COLLAPSE) );
 }
 
 //-----------------------------------------------------------------------------
diff --git a/src/OpenMesh/Tools/Subdivider/Uniform/Composite/CompositeT_impl.hh b/src/OpenMesh/Tools/Subdivider/Uniform/Composite/CompositeT_impl.hh
index 55e5e196..c9518ef0 100644
--- a/src/OpenMesh/Tools/Subdivider/Uniform/Composite/CompositeT_impl.hh
+++ b/src/OpenMesh/Tools/Subdivider/Uniform/Composite/CompositeT_impl.hh
@@ -576,7 +576,7 @@ void CompositeT<MeshType,RealType>::FVc(Coeff& _coeff)
       ++valence;
     }
 
-    c = static_cast<real_t>(_coeff(valence));
+    c = static_cast<scalar_t>(_coeff(valence));
 
     for (voh_it = mesh_.voh_iter(*v_it); voh_it.is_valid(); ++voh_it) {