diff --git a/src/renumber/SloanRenumber/Make/options b/src/renumber/SloanRenumber/Make/options
index bf9567fef2bb19ea3d4d22470c56838adb5fa31f..b76ce9a4bcfacb383cd1616d3c5ccab637f317b1 100644
--- a/src/renumber/SloanRenumber/Make/options
+++ b/src/renumber/SloanRenumber/Make/options
@@ -1,4 +1,5 @@
 EXE_INC = \
+    ${c++LESSWARN} \
     -I$(BOOST_ARCH_PATH)/include \
     -I$(LIB_SRC)/meshTools/lnInclude \
     -I$(LIB_SRC)/parallel/decompose/decompositionMethods/lnInclude \