diff --git a/Makefile.am b/Makefile.am
index 299493ea..8e91d76b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2,7 +2,7 @@ AUTOMAKE_OPTIONS = dist-bzip2 dist-xz foreign
 ACLOCAL_AMFLAGS = -I m4
 
 AM_CXXFLAGS = $(BOOST_CPPFLAGS) $(COMMON_CXXFLAGS)
-AM_LDFLAGS  = $(BOOST_LDFLAGS) $(BOOST_FILESYSTEM_LIB) $(COMMON_LDFLAGS)
+AM_LDFLAGS  = $(BOOST_LDFLAGS) $(BOOST_FILESYSTEM_LIB) $(BOOST_SYSTEM_LIB) $(COMMON_LDFLAGS)
 
 SUBDIRS = test
 
@@ -78,3 +78,4 @@ SUFFIXES = .cpp .cpp.rl
 lib_LTLIBRARIES  = libutil.la
 libutil_la_SOURCES  = $(UTIL_INCLUDE) $(UTIL_FILES)
 libutil_la_CXXFLAGS = -fPIC $(AM_CXXFLAGS)
+libutil_la_LIBADD   = $(BOOST_SYSTEM_LIB)