diff --git a/src/lib/util/threads/Makefile.am b/src/lib/util/threads/Makefile.am
index 7b9fb8f859..e31802308c 100644
--- a/src/lib/util/threads/Makefile.am
+++ b/src/lib/util/threads/Makefile.am
@@ -7,6 +7,7 @@ AM_CPPFLAGS += $(BOOST_INCLUDES) $(MULTITHREADING_FLAG)
 lib_LTLIBRARIES = libb10-threads.la
 libb10_threads_la_SOURCES  = lock.h lock.cc
 libb10_threads_la_SOURCES += thread.h thread.cc
-libb10_threads_la_LIBADD = $(top_builddir)/src/lib/exceptions/libb10-exceptions.la
+libb10_threads_la_LIBADD  = $(top_builddir)/src/lib/exceptions/libb10-exceptions.la
+libb10_threads_la_LIBADD += $(PTHREAD_LDFLAGS)
 
 CLEANFILES = *.gcno *.gcda