diff --git a/Point_set_3/include/CGAL/Point_set_3/IO.h b/Point_set_3/include/CGAL/Point_set_3/IO.h
index 2e680a744f8..8630788e787 100644
--- a/Point_set_3/include/CGAL/Point_set_3/IO.h
+++ b/Point_set_3/include/CGAL/Point_set_3/IO.h
@@ -26,8 +26,10 @@
 
 namespace CGAL {
 
+#ifndef DOXYGEN_RUNNING
 template <typename Point, typename Vector>
 class Point_set_3;
+#endif
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 ////////////////////////////////////////////////////////////////////////////////////////////////////
diff --git a/Point_set_3/include/CGAL/Point_set_3/IO/OFF.h b/Point_set_3/include/CGAL/Point_set_3/IO/OFF.h
index 5bd35941615..cff22686ae7 100644
--- a/Point_set_3/include/CGAL/Point_set_3/IO/OFF.h
+++ b/Point_set_3/include/CGAL/Point_set_3/IO/OFF.h
@@ -24,8 +24,10 @@
 
 namespace CGAL {
 
+#ifndef DOXYGEN_RUNNING
 template <typename Point, typename Vector>
 class Point_set_3;
+#endif
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 ////////////////////////////////////////////////////////////////////////////////////////////////////
diff --git a/Point_set_3/include/CGAL/Point_set_3/IO/PLY.h b/Point_set_3/include/CGAL/Point_set_3/IO/PLY.h
index 76daf4494ab..b1f3e763b07 100644
--- a/Point_set_3/include/CGAL/Point_set_3/IO/PLY.h
+++ b/Point_set_3/include/CGAL/Point_set_3/IO/PLY.h
@@ -24,8 +24,10 @@
 
 namespace CGAL {
 
+#ifndef DOXYGEN_RUNNING
 template <typename Point, typename Vector>
 class Point_set_3;
+#endif
 
 namespace IO {
 namespace internal {
diff --git a/Point_set_3/include/CGAL/Point_set_3/IO/XYZ.h b/Point_set_3/include/CGAL/Point_set_3/IO/XYZ.h
index 72c00bd528e..ce968f49af6 100644
--- a/Point_set_3/include/CGAL/Point_set_3/IO/XYZ.h
+++ b/Point_set_3/include/CGAL/Point_set_3/IO/XYZ.h
@@ -23,8 +23,10 @@
 
 namespace CGAL {
 
+#ifndef DOXYGEN_RUNNING
 template <typename Point, typename Vector>
 class Point_set_3;
+#endif
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 ////////////////////////////////////////////////////////////////////////////////////////////////////