diff --git a/examples/multithread_c/Makefile.am b/examples/multithread_c/Makefile.am
index b89c8405..e47e3b21 100644
--- a/examples/multithread_c/Makefile.am
+++ b/examples/multithread_c/Makefile.am
@@ -8,6 +8,7 @@ multi_SOURCES = \
 multi_LDADD = \
 	-L$(top_builddir)/src/.libs/ \
 	-lmodsecurity \
+	-lpthread \
 	$(YAJL_LDFLAGS) \
 	$(GEOIP_LDFLAGS) \
 	$(GLOBAL_LDADD)