diff --git a/src/SMESH/Makefile.am b/src/SMESH/Makefile.am
index e5f466f8d..d74be2995 100644
--- a/src/SMESH/Makefile.am
+++ b/src/SMESH/Makefile.am
@@ -99,5 +99,6 @@ libSMESHimpl_la_LDFLAGS = \
 	../DriverUNV/libMeshDriverUNV.la \
 	$(DriverCGNS_LIB) \
 	../SMESHUtils/libSMESHUtils.la \
+	$(BOOST_LIB_THREAD)  \
 	$(GEOM_LDFLAGS) -lNMTTools \
 	$(CAS_LDPATH) -lTKShHealing -lTKPrim -lTKG2d