diff --git a/Skin_surface_3/examples/Skin_surface_3/makefile b/Skin_surface_3/examples/Skin_surface_3/makefile
index 6bb3083d1a6..366e7352f52 100644
--- a/Skin_surface_3/examples/Skin_surface_3/makefile
+++ b/Skin_surface_3/examples/Skin_surface_3/makefile
@@ -13,7 +13,7 @@ include $(CGAL_MAKEFILE)
 #                    compiler flags
 #---------------------------------------------------------------------#
 
-CXXFLAGS = -O2 \
+CXXFLAGS = \
            -I.\
            -Idsrpdb/include\
            -I../../include \
@@ -30,7 +30,7 @@ LIBPATH = \
           $(TESTSUITE_LIBPATH) \
           $(CGAL_LIBPATH)
 
-LDFLAGS = -O2 \
+LDFLAGS = \
           $(TESTSUITE_LDFLAGS) \
           $(LONG_NAME_PROBLEM_LDFLAGS) \
           $(CGAL_LDFLAGS)