diff --git a/test/Makefile.am b/test/Makefile.am
index e3c1366..06b7bb2 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -33,7 +33,9 @@
                             -lldap \
                             -lgmock
 ldap_config_test_SOURCES  = ldap_config_test.cpp utils_test.cpp
-ldap_config_test_LDADD  = $(top_builddir)/phosphor-ldap-config/ldap_configuration.o $(top_builddir)/phosphor-ldap-config/utils.o
+ldap_config_test_LDADD  = $(top_builddir)/phosphor-ldap-config/ldap_configuration.o \
+                          $(top_builddir)/phosphor-ldap-config/utils.o \
+                          $(top_builddir)/phosphor-ldap-config/ldap_serialize.o
 
 check_PROGRAMS += ldap_mapper_test
 ldap_mapper_test_CPPFLAGS = $(utest_CPPFLAGS)