diff --git a/Constrained_triangulation_3/include/CGAL/Conforming_Delaunay_triangulation_3.h b/Constrained_triangulation_3/include/CGAL/Conforming_Delaunay_triangulation_3.h
index a4008e55370..c17fc9b992c 100644
--- a/Constrained_triangulation_3/include/CGAL/Conforming_Delaunay_triangulation_3.h
+++ b/Constrained_triangulation_3/include/CGAL/Conforming_Delaunay_triangulation_3.h
@@ -331,7 +331,7 @@ class Conforming_Delaunay_triangulation_3 : public T_3 {
   void debug_input_faces(bool b) {
     debug_flags.set(static_cast<int>(Debug_flags::input_faces), b);
   }
-  
+
   bool debug_missing_region() const {
     return debug_flags[static_cast<int>(Debug_flags::missing_region)];
   }