diff --git a/Point_set_processing_3/include/CGAL/IO/write_las_points.h b/Point_set_processing_3/include/CGAL/IO/write_las_points.h
index 62b38730c87..2fbb8d09af7 100644
--- a/Point_set_processing_3/include/CGAL/IO/write_las_points.h
+++ b/Point_set_processing_3/include/CGAL/IO/write_las_points.h
@@ -179,7 +179,7 @@ namespace LAS {
    \attention To write to a binary file, the flag `std::ios::binary` must be set during the creation of the `ofstream`.
 
    \tparam PointRange is a model of `ConstRange`. The value type of
-   its iterator is the key type of the named parameter `point_map`.
+                      its iterator is the key type of the named parameter `point_map`.
    \tparam PointMap is a model of `ReadablePropertyMap` with a value_type = `CGAL::Point_3`.
    \tparam PropertyHandler handlers to recover properties.
 
@@ -257,7 +257,7 @@ bool write_LAS_with_properties(std::ostream& os, ///< output stream.
   \attention To write to a binary file, the flag `std::ios::binary` must be set during the creation of the `ofstream`.
 
    \tparam PointRange is a model of `ConstRange`. The value type of
-   its iterator is the key type of the named parameter `point_map`.
+                      its iterator is the key type of the named parameter `point_map`.
    \tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
 
    \param os output stream
diff --git a/Point_set_processing_3/include/CGAL/IO/write_ply_points.h b/Point_set_processing_3/include/CGAL/IO/write_ply_points.h
index 84c5bef12d3..efc4890a7d4 100644
--- a/Point_set_processing_3/include/CGAL/IO/write_ply_points.h
+++ b/Point_set_processing_3/include/CGAL/IO/write_ply_points.h
@@ -101,8 +101,8 @@ namespace IO {
               of the stream must be set to `BINARY`.
 
    \tparam PointRange is a model of `ConstRange`. The value type of
-   its iterator is the key type of the `PropertyMap` objects provided
-   within the `PropertyHandler` parameter.
+                      its iterator is the key type of the `PropertyMap` objects provided
+                      within the `PropertyHandler` parameter.
    \tparam PropertyHandler handlers to recover properties.
 
    \returns `true` if writing was successful, `false` otherwise.
@@ -152,7 +152,7 @@ template <typename PointRange,
               of the stream must be set to `BINARY`.
 
    \tparam PointRange is a model of `ConstRange`. The value type of
-   its iterator is the key type of the named parameter `point_map`.
+                      its iterator is the key type of the named parameter `point_map`.
    \tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
 
    \param os output stream
@@ -220,11 +220,11 @@ bool write_PLY(std::ostream& os,
 
   set_stream_precision_from_NP(os, np);
 
-  if (has_normals)
+  if(has_normals)
     return write_PLY_with_properties(os, points,
                                      make_ply_point_writer(point_map),
                                      make_ply_normal_writer(normal_map));
-  // else
+
   return write_PLY_with_properties(os, points, make_ply_point_writer(point_map));
 }
 
@@ -245,7 +245,7 @@ bool write_PLY(std::ostream& os, const PointRange& points,
    \brief writes the range of `points` (positions + normals, if available) using \ref IOStreamPLY.
 
    \tparam PointRange is a model of `ConstRange`. The value type of
-   its iterator is the key type of the named parameter `point_map`.
+                      its iterator is the key type of the named parameter `point_map`.
    \tparam NamedParameters a sequence of \ref bgl_namedparameters "Named Parameters"
 
    \param filename the path to the output file
diff --git a/Stream_support/include/CGAL/IO/STL.h b/Stream_support/include/CGAL/IO/STL.h
index ffb6da813dc..e2f0ac84df9 100644
--- a/Stream_support/include/CGAL/IO/STL.h
+++ b/Stream_support/include/CGAL/IO/STL.h
@@ -89,7 +89,7 @@ bool read_STL(std::istream& is,
   if(!is.good())
   {
     if(verbose)
-      std::cerr<<"File doesn't exist."<<std::endl;
+      std::cerr << "File doesn't exist." << std::endl;
     return false;
   }