diff --git a/src/SMESH_SWIG/Makefile.am b/src/SMESH_SWIG/Makefile.am
index e3a8f92e7..f1d506a56 100644
--- a/src/SMESH_SWIG/Makefile.am
+++ b/src/SMESH_SWIG/Makefile.am
@@ -86,6 +86,7 @@ libSMESH_Swigcmodule_la_CPPFLAGS = \
 	$(GEOM_CXXFLAGS) \
 	$(CORBA_CXXFLAGS) \
 	$(CORBA_INCLUDES) \
+	$(BOOST_CPPFLAGS) \
 	-I$(srcdir)/../SMESHGUI \
 	-I$(top_builddir)/idl \
 	-I$(top_builddir)/salome_adm/unix